Publications

Here you will find the most important publications in journals over the last years. More information about particular publications are searchable within the publication database of HZDR.

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

2024

Bieberle, M.; Nestor Papapetrou, T.; Lecrivain, G.; Windisch, D.; Bieberle, A.; Wagner, M.; Hampel, U.
Simplified Beam Hardening Correction for Ultrafast X-ray CT Imaging of Binary Granular Mixtures
Sensors 24(2024), 2964
DOI: 10.3390/s24102964

Bieberle, A.; Hoffmann, R.; Döß, A.; Schleicher, E.; Hampel, U.
Modular and Cost-Effective Computed Tomography Design
Sensors 24(2024)8, 2568
DOI: 10.3390/s24082568

Pyka, T.; Bieberle, A.; Loll, R.; Held, C.; Schubert, M.; Schembecker, G.
Distributor Effects on Liquid Hold-Up in Rotating Packed Beds
Industrial & Engineering Chemistry Research 63(2024)4, 2000-2010
DOI: 10.1021/acs.iecr.3c03996

Boden, S.; Hampel, U.; Pietruske, H.; Bieberle, A.
Investigation on flow morphology and heat transfer for high-pressure steam condensation in an inclined tube at low inlet steam qualities
Nuclear Engineering and Design 419(2024), 112954
DOI: 10.1016/j.nucengdes.2024.112954

Hofmann, S.; Buntkiel, L.; Rautenbach, R.; Gaugler, L.; Ma, Y.; Haase, I.; Fitschen, J.; Wucherpfennig, T.; Reinecke, S.; Hoffmann, M.; Takors, R.; Hampel, U.; Schlüter, M.
Experimental Analysis of Lifelines in a 15,000 L Bioreactor by Means of Lagrangian Sensor Particles
Chemical Engineering Research and Design 205(2024), 0263-8762
DOI: 10.1016/j.cherd.2024.04.015

Nedeltchev, S.; Marchini, S.; Schubert, M.; Hampel, U.
New Approaches for Prediction of Flow Regime Boundaries and Overall Gas Holdups in a Bubble Column Operated with Aqueous Solutions of 2-Pentanol
Journal of Chemical Engineering of Japan 57(2024)1, 2330388
DOI: 10.1080/00219592.2024.2330388

Franke, P.; Shabanilemraski, I.; Schubert, M.; Hampel, U.; Kenig, E. Y.
A new approach to model the fluid dynamics in sandwich packings
Chemical Product and Process Modeling 19(2024)2, 211-227
DOI: 10.1515/cppm-2023-0054

Fogel, S.; Unger, S.; Hampel, U.
Operating windows and techno-economics of a power-to-methanol process utilizing proton-conducting high temperature electrolyzers
Journal of CO2 Utilization 82(2024), 102758
DOI: 10.1016/j.jcou.2024.102758

Fogel, S.; Unger, S.; Hampel, U.
Dynamic system modeling and simulation of a power-to-methanol process based on proton-conducting tubular solid oxide cells
Energy conversion and management 300(2024), 117970
DOI: 10.1016/j.enconman.2023.117970

Bieberle, M.; Gundrum, T.; Räbiger, D.; Bieberle, A.; Eckert, S.
3-D shape and velocity measurement of argon gas bubbles rising in liquid sodium by means of ultrafast X-ray CT imaging
Flow Measurement and Instrumentation 95(2024), 102503
DOI: 10.1016/j.flowmeasinst.2023.102503

Maestri, R.; Radhakrishnakumar, S.; Bürkle, F.; Ding, W.; Büttner, L.; Czarske, J.; Hampel, U.; Lecrivain, G.
Equilibrium Taylor bubble in a narrow vertical tube with constriction
Physics of Fluids 36(2024), 032108
DOI: 10.1063/5.0180157

Papapetrou, T. N.; Bieberle, M.; Barthel, F.; Hampel, U.; Lecrivain, G.
Investigating binary granular mixing in a rotating drum using ultrafast X-ray computed tomography
Powder Technology (2024)
DOI: 10.1016/j.powtec.2024.119964

2023

Yu, F.; Ding, W.; Luo, X.; He, B.; Hampel, U.
Multi-objective optimization of fractal-tree microchannels in a rectangular heat sink by a distributed-adaptive genetic algorithm
International Journal of Heat and Mass Transfer 217(2023), 124672
DOI: 10.1016/j.ijheatmasstransfer.2023.124672

Wu, W.; Ding, W.; Hampel, U.; Sun, B.
Analysis of the influence of swirling flow on the boiling heat transfer characteristics of two-phase flow
International Journal of Heat and Mass Transfer 221(2023)125075
DOI: 10.1016/j.ijheatmasstransfer.2023.125075

Zhang, J.; Rafique, M.; Ding, W.; Bolotnov, I. A.; Hampel, U.
A direct numerical simulation study to elucidate the enhancement of heat transfer for nucleate boiling on surfaces with micro-pillars
International Communications in Heat and Mass Transfer 147(2023), 106943
DOI: 10.1016/j.icheatmasstransfer.2023.106943

Pyka, T.; Bieberle, A.; Loll, R.; Held, C.; Schubert, M.; Schembecker, G.
Novel Liquid Distributor Concept for Rotating Packed Beds
Industrial & Engineering Chemistry Research 62(2023)14, 5984-5994
DOI: 10.1021/acs.iecr.3c00248

Marchini, S.; Bieberle, A.; Schubert, M.; Hampel, U.
Guidance for measuring the axial gas dispersion coefficient in bubble columns via gas flow modulation
Industrial & Engineering Chemistry Research 62(2023)46, 19936-19950
DOI: 10.1021/acs.iecr.3c02870

Buntkiel, L.; Ma, Y.; Reinecke, S.; Hampel, U.
Orientation resolved measurements of accelerations with sensor particles in bioreactors
Technisches Messen 90(2023)12, 835-845
DOI: 10.1515/teme-2023-0115

Melo Euzebio, T. A.; Parra Ramirez, M. A.; Reinecke, S.; Hampel, U.
Energy Price as an Input to Fuzzy Wastewater Level Control in Pump Storage Operation
IEEE Access 11(2023), 93701-93712
DOI: 10.1109/ACCESS.2023.3310545

Mohseni, E.; Reinecke, S.; Hampel, U.
Controlled bubble formation from an orifice through harmonic gas pressure modulation
Chemical Engineering Journal 470(2023), 143953
DOI: 10.1016/j.cej.2023.143953

Banari, A.; Graebe, K.; Rudolph, M.; Mohseni, E.; Lorenz, P.; Zimmer, K.; Hübner, R.; Henry, C.; Bossy, M.; Hampel, U.; Lecrivain, G.
Influence of engineered roughness microstructures on adhesion and turbulent resuspension of microparticles
Journal of Aerosol Science 174(2023), 106258
DOI: 10.1016/j.jaerosci.2023.106258

Nedeltchev, S. N.; Marchini, S.; Schubert, M.; Hlawitschka, M. W.; Hampel, U.
Novel Identifier of Transitions in Bubble Columns Operated with Water and Aqueous Alcohol Solutions
Chemical Engineering & Technology 46(2023)9, 1782-1790
DOI: 10.1002/ceat.202300095

Loll, R.; Nordhausen, L.; Bieberle, A.; Schubert, M.; Pyka, T.; Koop, J.; Held, C.; Schembecker, G.
Analysis of Flow Patterns in Structured Zickzack-Packings for Rotating Packed Beds using Gamma-Ray Computed Tomography
Industrial & Engineering Chemistry Research 62(2023), 15625-15634
DOI: 10.1021/acs.iecr.3c02252

Döß, A.; Höhne, T.; Schubert, M.; Hampel, U.
Comparison of different CFD approaches for the simulation of developing free surface two-phase flow in straight and bent pipes
Chemical Product and Process Modeling (2023)
DOI: 10.1515/cppm-2023-0028

Parra Ramirez, M. A.; Fogel, S.; Reinecke, S.; Hampel, U.
Techno-economic assessment of PEM electrolysis for O2 supply in activated sludge systems – a simulation study based on the BSM2 wastewater treatment plant
Processes 11(2023), 1639
DOI: 10.3390/pr11061639

Marchini, S.; Bieberle, A.; Schleicher, E.; Schubert, M.; Hampel, U.
Sensing strategies for determining the axial gas dispersion coefficient in bubble columns via gas flow modulation technique
Industrial & Engineering Chemistry Research 62(2023)45, 19225-19237
DOI: 10.1021/acs.iecr.3c00380

Tas-Köhler, S.; Boden, S.; Franz, R.; Liao, Y.; Hampel, U.
An experimental study of boiling two-phase flow in a vertical rod bundle with a spacer grid-Part 2: Effects of vane angle
Experimental Thermal and Fluid Science 145(2023), 110903
DOI: 10.1016/j.expthermflusci.2023.111000

Wiedemann, P.; Meller, R.; Schubert, M.; Hampel, U.
Application of a hybrid multiphase CFD approach to the simulation of gas–liquid flow at a trapezoid fixed valve for distillation trays
Chemical Engineering Research and Design 193(2023), 777-786
DOI: 10.1016/j.cherd.2023.04.016

Merbold, S.; Hasanuzzaman, G.; Buchwald, T.; Schunk, C.; Schmeling, D.; Volkmann, A.; Brinkema, R.; Hampel, U.; Schröder, A.; Egbers, C.
Reference experiment on aerosol particle transport for dynamic situations
Technisches Messen 90(2023)5, 340-352
DOI: 10.1515/teme-2022-0118

Windisch, D.; Kaever, C.; Juckeland, G.; Bieberle, A.
Parallel Algorithm for Connected-Component Analysis using CUDA
Algorithms 16(2023)2, 80
DOI: 10.3390/a16020080

Marchini, S.; Bieberle, A.; Schubert, M.; Hampel, U.
Uncertainty analysis of gamma-ray densitometry applied for gas flow modulation technique in bubble columns
Chemical Engineering Science 282(2023), 119214
DOI: 10.1016/j.ces.2023.119214

Marchini, S.; Vishwakarma, V.; Schubert, M.; Brunazzi, E.; Hampel, U.
Effects of non-uniform weeping distributions on tray and point efficiencies
Results in Engineering 19(2023), 101238
DOI: 10.1016/j.rineng.2023.101238

Zhang, J.; Rafique, M.; Ding, W.; Bolotnov, I.; Hampel, U.
Direct numerical simulation of microlayer formation and evaporation underneath a growing bubble driven by the local temperature gradient in nucleate boiling
International Journal of Thermal Sciences 193(2023), 108551
DOI: 10.1016/j.ijthermalsci.2023.108551

Zhang, J.; Ding, W.; Hampel, U.
How droplets pin on solid surfaces
Journal of Colloid and Interface Science 640(2023), 940-948
DOI: 10.1016/j.jcis.2023.03.031

Wiedemann, P.; de Assis Dias, F.; Trepte, M.; Schleicher, E.; Hampel, U.
Towards Real-Time Analysis of Gas-Liquid Pipe Flow: A Wire-Mesh Sensor for Industrial Applications
Sensors 23(2023)8, 4067
DOI: 10.3390/s23084067

Tas-Köhler, S.; Boden, S.; Franz, R.; Liao, Y.; Hampel, U.
An experimental study of boiling two-phase flow in a vertical rod bundle with a spacer grid. Part 1: Effects of mass flux and heat flux
Experimental Thermal and Fluid Science 145(2023), 110903
DOI: 10.1016/j.expthermflusci.2023.110903

Zhang, J.; Ding, W.; Wang, Z.; Wang, H.; Hampel, U.
Microscopic liquid-gas interface effect on liquid wetting
Journal of Colloid and Interface Science 630(2023), 813-822
DOI: 10.1016/j.jcis.2022.10.062

Harm, U.; Kryk, H.; Hampel, U.
Flow‐dependent zinc corrosion in boric acid‐containing electrolytes
Materials and Corrosion 74(2023)2, 277-284
DOI: 10.1002/maco.202213341

Banari, A.; Hertel, D.; Schlink, U.; Hampel, U.; Lecrivain, G.
Simulation of particle resuspension by wind in an urban system
Environmental Fluid Mechanics 23(2023), 41-63
DOI: 10.1007/s10652-022-09905-x

Windisch, D.; Kelling, J.; Juckeland, G.; Bieberle, A.
Real-time Data Processing for Ultrafast X-Ray Computed Tomography using Modular CUDA based Pipelines
Computer Physics Communications 287(2023), 108719
DOI: 10.1016/j.cpc.2023.108719

2022

Shumilov, V.; Kirilin, A.; Tokarev, A.; Boden, S.; Schubert, M.; Hampel, U.; Hupa, L.; Salmi, T.; Murzin, D. Y.
Preparation of γ-Al₂O₃/α-Al₂O₃ ceramic foams as catalyst carriers via the replica technique
Catalysis Today 383(2022), 64-73

Bieberle, A.; Berger, R.; Stave, P.; Hampel, U.
Multi-channel detector module for multi-energy computed gamma ray tomography
Journal of Signal Processing Systems 94(2022), 349-360

Marchini, S.; Schubert, M.; Hampel, U.
Analysis of the effect of uncertainties in hydrodynamic parameters on the accuracy of the gas flow modulation technique for bubble columns
Chemical Engineering Journal 434(2022), 133478

Setoodeh, H.; Moonesi Shabestary, A.; Ding, W.; Lucas, D.; Hampel, U.
CFD-Modelling of Boiling in a Heated Pipe Including Flow Pattern Transition
Applied Thermal Engineering (2022), 117962

Kipping, R.; Wagner, M.; Hampel, U.
On Inter-bubble Distances and Bubble Clustering in Bubbly Flows: An Experimental Study
Chemical Engineering Journal 431(2022)4, 133486

Mohseni, E.; Chiamulera, M.; Reinecke, S.; Hampel, U.
Bubble formation from sub-millimeter orifices: experimental analysis and modeling
Chemical Engineering and Processing: Process Intensification 173(2022), 108809

Fogel, S.; Yeates, C.; Unger, S.; Rodriguez Garcia, G.; Baetcke, L.; Dornheim, M.; Schmidt-Hattenberger, C.; Bruhn, D.; Hampel, U.
SNG based energy storage systems with subsurface CO₂ storage
Energy Advances 1(2022), 402-421

de Assis Dias, F.; Wiedemann, P.; Schleicher, E.; Da Silva, M. J.; Hampel, U.
Improvement of wire-mesh sensor accuracy via adapted circuit design and integrated energy loss measurement
Measurement Science and Technology 33(2022), 084002

Hampel, U.; Babout, L.; Banasiak, R.; Schleicher, E.; Soleimani, M.; Wondrak, T.; Vauhkonen, M.; Lähivaara, T.; Tan, C.; Hoyle, B.; Penn, A.
A review on fast tomographic imaging techniques and their potential application in industrial process control
Sensors 22(2022)6, 2309

Nain Camacho Hernandez, J.; Link, G.; Schubert, M.; Hampel, U.
Novel Mixing Relations for Determining the Effective Thermal Conductivity of Open-Cell Foams
Materials 15(2022)6, 2168

Reinecke, S.; Buntkiel, L.; Kipping, R.; Hampel, U.
Process characterization in industrial vessels by flow-following sensor particles
Measurement Science and Technology 33(2022)9, 095106

Flechsig, S.; Sohr, J.; Schubert, M.; Hampel, U.; Kenig, E. Y.
A new tomography-based approach for the fluid dynamic description of conventional structured packings and sandwich packings
Chemical Engineering and Processing: Process Intensification 171(2022), 108530

Garcia, M. M.; Sattar, M. A.; Atmani, H.; Legendre, D.; Babout, L.; Schleicher, E.; Hampel, U.; Portela, L. M.
Towards Tomography-Based Real-Time Control of Multiphase Flows: A Proof of Concept in Inline Fluid Separation
Sensors 22(2022), 4443

Tas-Köhler, S.; Neumann-Kipping, M.; Liao, Y.; Bieberle, A.; Hampel, U.
Experimental Investigations and Numerical Assessment of Liquid Velocity Profiles and Turbulence for Single- and Two-phase Flow in a Constricted Vertical Pipe
International Journal of Multiphase Flow 157(2022), 104224

Camacho Hernandez, J. N.; Link, G.; Schubert, M.; Hampel, U.
Experimental Study of a Compact Microwave Applicator for Evaporation of Airflow-Entrained Droplets
Materials 15(2022), 6765

2021

Hernandez, J. N. C.; Link, G.; Schubert, M.; Hampel, U.
Modeling of the effective permittivity of open-cell ceramic foams inspired by Platonic solids
Materials 14(2021), 7446

Xiao, J.; Yan, H.; Schubert, M.; Liu, L.; Döß, A.; Schleicher, E.; Hampel, U.
Effect of Nozzle Geometry on Centerline Gas Holdup in Submerged Gas Injection
Metallurgical and Materials Transactions B 52(2021), 4002-4011

Parra Ramirez, M. A.; Reinecke, S.; Skouteris, G.; Hampel, U.
Energy Flexibility Chances for the Wastewater Treatment Plant of the Benchmark Simulation Model 1
Processes 9(2021), 1854

Herrmann-Heber, R.; Ristau, F.; Mohseni, E.; Reinecke, S.; Hampel, U.
Experimental Oxygen Mass Transfer Study of Micro-perforated Diffusers
Energies 14(2021)21, 7268

Banari, A.; Henry, C.; Fank Eidt, R. H.; Pierre, L.; Klaus, Z.; Hampel, U.; Lecrivain, G.
Evidence of collision-induced resuspension of microscopic particles from a monolayer deposit
Physical Review Fluids 6(2021)8, L082301

Kipping, R.; Wagner, M.; Hampel, U.
On Inter-bubble Distances and Bubble Clustering in Bubbly Flows: An Experimental Study
Chemical Engineering Journal 431(2022)4, 133486

Windisch, D.; Knodel, O.; Juckeland, G.; Hampel, U.; Bieberle, A.
FPGA-based Real-Time Data Acquisition for Ultrafast X-Ray Computed Tomography
IEEE Transactions on Nuclear Science 68(2021)12, 2779-2786

Setoodeh, H.; Moonesi Shabestary, A.; Ding, W.; Lucas, D.; Hampel, U.
CFD-Modelling of Boiling in a Heated Pipe Including Flow Pattern Transition
Applied Thermal Engineering (2022), 117962

de Assis Dias, F.; Wiedemann, P.; Da Silva, M. J.; Schleicher, E.; Hampel, U.
Tuning capacitance wire-mesh sensor gains for measurement of conductive fluids
Technisches Messen 88(2021)S1, S107-S113

Mohseni, E.; Ziegenhein, T.; Reinecke, S.; Hampel, U.
Bubble formation from sub-millimeter orifices under variable gas flow conditions
Chemical Engineering Science 242(2021), 116698

Tas-Köhler, S.; Liao, Y.; Hampel, U.
A critical analysis of drag force modelling for disperse gas-liquid flow in a pipe with an obstacle
Chemical Engineering Science 246(2021), 117007

Döß, A.; Schubert, M.; Wiedemann, P.; Junge, P.; Hampel, U.; Schleicher, E.; Mehringer, C.; Geipel, C.
Flow morphologies in straight and bent horizontal pipes
ACS Engineerung Au 1(2021), 39-49

de Assis Dias, F.; Wiedemann, P.; Da Silva, M. J.; Schleicher, E.; Hampel, U.
Combined Finite Element and Electronic Circuit Model of a Wire-Mesh Sensor
IEEE Access 9(2021), 66309-66322

Vishwakarma, V.; Abdul Haq, S.; Schleicher, E.; Schubert, M.; Hampel, U.
Experimental analysis of the hydrodynamic performance of an industrial-scale cross-flow sieve tray
Chemical Engineering Research and Design 174(2021), 294-306

Taborda, M. A.; Kipping, R.; Hampel, U.; Sommerfeld, M.
Advanced Analysis of Bubble Columns: Comparison of Euler/Lagrange Simulations and Experiments under CO2 chemisorption conditions
Chemical Engineering Research and Design 170(2021), 389-405

Mohseni, E.; Bauermann Lang, G.; Reinecke, S.; Hampel, U.
A mechanistic model for bubble formation from microscale orifices under constant gas flow conditions
ACS Engineerung Au 1(2021)2, 96-104

Prasser, H.-M.; Hampel, U.; Schütz, P.
TOPFLOW Pressure Chamber – versatile techniques to simplify design and instrumentation of thermal fluid dynamic experiments at high pressure
Nuclear Engineering and Design 372(2021), 110971

Marchini, S.; Vishwakarma, V.; Schubert, M.; Brunazzi, E.; Hampel, U.
Direct tray and point efficiency measurements including weeping effects through a convenient addon for air/water simulators
Industrial & Engineering Chemistry Research 60(2021)6, 2600-2612

Windmeier, C.; Flegiel, F.; Döß, A.; Franz, R.; Schleicher, E.; Wiezorek, M.; Schubert, M.; Hampel, U.
A new research infrastructure for investigating flow hydraulics and process equipment at critical fluid properties
Chemie Ingenieur Technik 93(2021)7, 1119-1125

Flegiel, F.; Windmeier, C.; Wiezorek, M.; Döß, A.; Schubert, M.; Hampel, U.; Schleicher, E.
Capacity and sizing of wire mesh mist eliminators at critical fluid properties
Chemie Ingenieur Technik 93(2021)7, 1166-1177

Döß, A.; Schubert, M.; Wiezorek, M.; Hampel, U.; Flegiel, F.; Windmeier, C.; Schleicher, E.; Schunk, C.
Morphology of flashing feeds at critical fluid properties in larger pipes
Chemie Ingenieur Technik 93(2021)7, 1126-1133

Döß, A.; Schubert, M.; Hampel, U.; Mehringer, C.; Geipel, C.; Schleicher, E.
Two-phase flow morphology and phase fractions in larger feed line sections
Chemie Ingenieur Technik 93(2021)7, 1134-1141

Unger, S.; Müller, J.; Bangalore Mohankumar, M.; Rath, S.; Hampel, U.
Numerical dimensioning of a pre-cooler for sCO2 power cycles to utilize industrial waste heat
Energies 14(24)(2021), 8278

Vishwakarma, V.; Wiedemann, P.; Schleicher, E.; Schubert, M.; Hampel, U.
A new approach for estimating the effective froth height on column trays
Chemical Engineering Science 231(2021), 116304

Carl Lavoratti, T.; Heitkam, S.; Hampel, U.; Lecrivain, G.
A computational method to simulate mono- and poly-disperse two-dimensional foams flowing in obstructed channel
Rheologica Acta 60(2021), 587-601

Vishwakarma, V.; Schleicher, E.; Bieberle, A.; Schubert, M.; Hampel, U.
Advanced flow profiler for two-phase flow imaging on distillation trays
Chemical Engineering Science 231(2021), 116280

Tas-Köhler, S.; Neumann-Kipping, M.; Liao, Y.; Krepper, E.; Hampel, U.
CFD simulation of bubbly flow around an obstacle in a vertical pipe with a focus on breakup and coalescence modelling
International Journal of Multiphase Flow 135(2021), 103528

Setoodeh, H.; Ding, W.; Lucas, D.; Hampel, U.
Modelling and Simulation of Flow Boiling with an Eulerian-Eulerian Approach and Integrated Models for Bubble Dynamics and Temperature-dependent Heat Partitioning
International Journal of Thermal Sciences 161(2021), 106709

Papapetrou, T. N.; Lecrivain, G.; Bieberle, M.; Boudouvis, A.; Hampel, U.
An improved contact method for quantifying the mixing of a binary granular mixture
Granular Matter 23(2021), 15

Unger, S.; Beyer, M.; Pietruske, H.; Szalinski, L.; Hampel, U.
Natural convection heat transfer performance of additively manufactured tube bundle heat exchangers with novel fin design
Heat and Mass Transfer 57(2021), 1193-1203

Unger, S.; Beyer, M.; Pietruske, H.; Szalinski, L.; Hampel, U.
Air-side thermal and flow performance study of additively manufactured tube bundle heat exchangers with novel fin design
International Journal of Thermal Sciences 161(2021), 106752

Porombka, P.; Boden, S.; Lucas, D.; Hampel, U.
Horizontal annular flow through orifice studied by X-ray microtomography
Experiments in Fluids 62(2021)1, 5

Kipping, R.; Kryk, H.; Hampel, U.
Experimental analysis of gas phase dynamics in a lab scale bubble column operated with deionized water and NaOH solution under uniform bubbly flow conditions
Chemical Engineering Science 229(2021), 116056

Unger, S.; Arlit, M.; Beyer, M.; Hampel, U.
Experimental study on the advective heat flux of a heat exchanger for passive cooling of spent fuel pools by temperature anemometry grid sensor
Nuclear Engineering and Design 379(2021), 111237

2020

Wiedemann, P.; de Assis Dias, F.; Schleicher, E.; Hampel, U.
Temperature Compensation for Conductivity-Based Phase Fraction Measurements with Wire-Mesh Sensors in Gas-Liquid Flows of Dilute Aqueous Solutions
Sensors (2020)

Vishwakarma, V.; Wiedemann, P.; Schleicher, E.; Schubert, M.; Hampel, U.
A new approach for estimating the effective froth height on column trays
Chemical Engineering Science (2020)

Hernandez, J. N. C.; Link, G.; Soldatov, S.; Füssel, A.; Schubert, M.; Hampel, U.
Experimental and numerical analysis of the complex permittivity of open-cell ceramic foams
Ceramics International (2020)

Mohseni, E.; Jose Kalayathine, J.; Reinecke, S.; Hampel, U.
Dynamics of Bubble Formation at Micro-orifices under Constant Gas Flow Conditions
International Journal of Multiphase Flow 132(2020), 103407

Vishwakarma, V.; Schleicher, E.; Bieberle, A.; Schubert, M.; Hampel, U.
Advanced flow profiler for two-phase flow imaging on distillation trays
Chemical Engineering Science (2020)

Kästner, W.; Alt, S.; Seeliger, A.; Zacharaias, F.; Harm, U.; Illgen, R.; Hampel, U.; Kryk, H.
Modelling thermal-hydraulic effects of zinc borate deposits in the PWR core after LOCA - Experimental strategies and test facilities
atw - International Journal for Nuclear Power 65(2020)6/7, 341-345

de Assis Dias, F.; Nunes Dos Santos, E.; Da Silva, M. J.; Schleicher, E.; Morales, R. E. M.; Hewakandamby, B.; Hampel, U.
New algorithm to discriminate phase distribution of gas-oil-water pipe flow with dual-modality wire-mesh sensor
IEEE Access 8(2020), 125163-125178

Papapetrou, T. N.; Lecrivain, G.; Bieberle, M.; Boudouvis, A.; Hampel, U.
An improved contact method for quantifying the mixing of a binary granular mixture
Granular Matter (2020)

Hampel, U.; Schubert, M.; Döß, A.; Sohr, J.; Vishwakarma, V.; Repke, J.-U.; Gerke, S. J.; Leuner, H.; Rädle, M.; Kapoustina, V.; Schmitt, L.; Grünewald, M.; Brinkmann, J. H.; Plate, D.; Kenig, E. Y.; Lutters, N.; Bolenz, L.; Buckmann, F.; Toye, D.; Arlt, W.; Linder, T.; Hoffmann, R.; Klein, H.; Rehfeldt, S.; Winkler, T.; Bart, H.-J.; Wirz, D.; Schulz, J.; Scholl, S.; Augustin, W.; Jasch, K.; Schlüter, F.; Schwerdtfeger, N.; Jupke, A.; Kabatnik, C.; Braeuer, A. S.; D'Auria, M.; Runowski, T.; Casal, M. F.; Becker, K.; David, A.-L.; Górak, A.; Skiborowski, M.; Groß, K.; Qammar, H.
Recent advances in experimental techniques for flow and mass transfer analyses in thermal separation systems
Chemie Ingenieur Technik 92(2020)7, 926-948

Bieberle, A.; Windisch, D.; Iskander, K.; Bieberle, M.; Hampel, U.
A smart multi-plane detector design for ultrafast electron beam X-ray computed tomography
Sensors 20(2020), 5174

Unger, S.; Beyer, M.; Szalinski, L.; Hampel, U.
Thermal and flow performance of tilted oval tubes with novel fin designs
International Journal of Heat and Mass Transfer (2020)

Hampel, U.; Barthel, F.; Bieberle, A.; Bieberle, M.; Boden, S.; Franz, R.; Neumann-Kipping, M.; Tas-Köhler, S.
Tomographic imaging of two-phase flow
International Journal of Advanced Nuclear Reactor Design and Technology 2(2020), 86-92

Porombka, P.; Boden, S.; Lucas, D.; Hampel, U.
Horizontal annular flow through orifice studied by X-ray microtomography
Experiments in Fluids (2020)

Tas-Köhler, S.; Lecrivain, G.; Krepper, E.; Unger, S.; Hampel, U.
Numerical investigation on the effect of transversal fluid field deformation on heat transfer in a rod bundle with mixing vanes
Nuclear Engineering and Design (2020)

Neumann-Kipping, M.; Bieberle, A.; Hampel, U.
Investigations on bubbly two-phase flow in a constricted vertical pipe
International Journal of Multiphase Flow 130(2020), 103340

Ding, W.; Zhang, J.; Sarker, D.; Hampel, U.
The role of microlayer for bubble sliding in nucleate boiling: A new view point for heat transfer enhancement via surface engineering
International Journal of Heat and Mass Transfer 149(2020), 119239

Wagner, M.; Reinicke, S.; Kratzsch, A.; Hampel, U.
An analysis for detecting potential relocation of the inventory of dry storage containers during prolonged interim storage via changes in the wall temperature fields
Nuclear Engineering and Design 366(2020), 110749

Möller, F.; Dehmelt, T.; Schmidt, N.; Lau, Y. M.; Hampel, U.; Schubert, M.
A Recirculation Cell Approach for Hydrodynamic and Mass Transfer Modeling in Bubble Columns with and without Internals
Chemical Engineering Journal 383(2020), 123197

Skouteris, G.; Rodriguez Garcia, G.; Reinecke, S.; Hampel, U.
The use of pure oxygen for aeration in aerobic wastewater treatment: a review of its potential and limitations
Bioresource Technology 312(2020), 123595

Timaeus, R.; Schleicher, E.; Bieberle, A.; Hampel, U.; Schubert, M.
Identification of the process windows of inclined rotating fixed-bed reactors with concentric tube – a hydrodynamic analysis
Chemical Engineering Science 220(2020), 115637

Sahovic, B.; Atmani, H.; Sattar, M. A.; Garcia, M. M.; Schleicher, E.; Legendre, D.; Climent, E.; Zamanski, R.; Pedrono, A.; Babout, L.; Banasiak, R.; Portela, L.; Hampel, U.
Controlled inline fluid separation based on smart process tomography sensors
Chemie Ingenieur Technik 92(2020)5, 554-563

Sahovic, B.; Atmani, H.; Wiedemann, P.; Schleicher, E.; Legendre, D.; Climent, E.; Zamanski, R.; Pedrono, A.; Hampel, U.
A study on the relationship between upstream and downstream conditions in swirling two-phase flow
Flow Measurement and Instrumentation 74(2020), 101767

Hernandez, J. N. C.; Lecrivain, G.; Schubert, M.; Hampel, U.
Droplet retention time and pressure drop in SiSiC open-cell foams used as droplet separation devices – A numerical approach
Industrial & Engineering Chemistry Research (2020)

Nozomi, A.; Watanabe, S.; Miyahara, M. T.; Yamamoto, R.; Hampel, U.; Lecrivain, G.
Direct observation of the attachment behavior of hydrophobic colloidal particles onto a bubble surface
Soft Matter 16(2020), 695

Rachamin, R.; Hampel, U.
Feasibility assessment of using external neutron and gamma radiation measurements for monitoring the state of fuel assemblies in dry storage casks
Annals of Nuclear Energy 135(2020), 106975

Schäfer, T.; Neumann-Kipping, M.; Bieberle, A.; Bieberle, M.; Hampel, U.
Ultrafast X-ray CT imaging for hydrodynamic investigations of gas-liquid two-phase flow in centrifugal pumps
Journal of Fluids Engineering - Transactions of the ASME 142(2020)4, 041502

Moonesi Shabestary, A.; Bieberle, A.; von der Cron, D.; Ding, W.; Krepper, E.; Lucas, D.; Hampel, U.
Flow morphology and heat transfer analysis for high-pressure steam condensation in an inclined tube part II: Numerical investigations
Nuclear Engineering and Design 362(2020), 110580

Bieberle, A.; Moonesi Shabestary, A.; Geißler, T.; Boden, S.; Beyer, M.; Hampel, U.
Flow morphology and heat transfer analysis during high-pressure steam condensation in an inclined tube part I: Experimental investigations
Nuclear Engineering and Design 361(2020), 110553

Manthey, R.; Viereckl, F.; Moonesi Shabestary, A.; Zhang, Y.; Ding, W.; Lucas, D.; Schuster, C.; Leyer, S.; Hurtado, A.; Hampel, U.
Modeling of passive heat removal systems: A review with reference to the Framatome BWR reactor KERENA : Part II
Energies 13(2020)1, 109

Moonesi Shabestary, A.; Viereckl, F.; Zhang, Y.; Manthey, R.; Lucas, D.; Schuster, C.; Leyer, S.; Hurtado, A.; Hampel, U.
Modelling of passive heat removal systems: A review with reference to the Framatome BWR reactor KERENA :Part I
Energies 13(2020)1, 35

Lecrivain, G.; Grein, T. B. P.; Yamamoto, R.; Hampel, U.; Taniguchi, T.
Eulerian/Lagrangian formulation for the elasto-capillary deformation of a flexible fibre
Journal of Computational Physics 409(2020), 109324

Unger, S.; Krepper, E.; Beyer, M.; Hampel, U.
Numerical optimization of a finned tube bundle heat exchanger arrangement for passive spent fuel pool cooling to ambient air
Nuclear Engineering and Design 361(2020), 110549

Windisch, D.; Bieberle, M.; Bieberle, A.; Hampel, U.
Control concepts for image-based structure tracking with ultrafast electron beam X-ray tomography
Transactions of the Institute of Measurement and Control (2020)

Herrmann-Heber, R.; Reinecke, S.; Hampel, U.
Dynamic Aeration for Improved Oxygen Mass Transfer in the Wastewater Treatment Process
Chemical Engineering Journal 386(2020), 122068

Willms, T.; Kryk, H.; Hampel, U.
Microreactor Studies for Efficient Organic Oxidation Processes
Catalysis Today 346(2020), 3-9

Schäfer, T.; Neumann, M.; Bieberle, A.; Hampel, U.
Tomographic investigations on centrifugal pumps conveying gas-liquid two-phase flow
Flow Measurement and Instrumentation (2020)

2019

Setoodeh, H.; Ding, W.; Lucas, D.; Hampel, U.;
Prediction of Bubble Departure in Forced Convection Boiling with a Mechanistic Model that Considers Dynamic Contact Angle and Base Expansion
Energies 12(2019)10, 1950

Neumann, M.; Bieberle, M.; Wagner, M.; Bieberle, A.; Hampel, U.;
Improved axial plane distance and velocity determination for ultrafast electron beam X-ray computed tomography
Measurement Science and Technology 30(2019)8, 084001

Arlit, M.; Schroth, C.; Schleicher, E.; Hampel, U.;
Flow Rate Measurement in Flows with Asymmetric Velocity Profiles by Means of Distributed Thermal Anemometry
Flow Measurement and Instrumentation 68(2019), 101570

Mohseni, E.; Herrmann-Heber, R.; Reinecke, S. F.; Hampel, U.;
Bubble Generation by Micro-Orifices with Application on Activated Sludge Wastewater Treatment
Chemical Engineering and Processing: Process Intensification (2019)

Unger, S.; Beyer, M.; Thiele, J.; Hampel, U.;
Experimental study of the natural convection heat transfer performance for finned oval tubes at different tube tilt angles
Experimental Thermal and Fluid Science 105(2019), 100-108

Windisch, D.; Bieberle, M.; Bieberle, A.; Hampel, U.;
Control concepts for image-based structure tracking with ultrafast electron beam X-ray tomography
Transactions of the Institute of Measurement and Control (2019)

Vishwakarma, V.; Schubert, M.; Hampel, U.;
Development of a Refined RTD-Based Efficiency Prediction Model for Cross-flow Trays
Industrial & Engineering Chemistry Research 58(2019)8, 3258-3268

Timaeus, R.; Hampel, U.; Schubert, M.;
Heterogeneous modeling approach for gas-limited reactions in an inclined rotating fixed bed reactor
Chemie Ingenieur Technik 91(2019)5, 637-644

Sohr, J.; Bieberle, M.; George, G. R.; Flechsig, S.; Kenig, E. Y.; Schubert, M.; Hampel, U.;
Comparative assessment of different image processing methods to determine the gas-liquid interfacial area in froth regimes of sandwich packings from ultrafast X-ray tomography image data
Chemical Engineering Research and Design 147(2019), 676-688

Möller, F.; Kipping, R.; Lavetty, C.; Hampel, U.; Schubert, M.;
Two-bubble class approach based on measured bubble size distribution for bubble columns with and without internals
Industrial & Engineering Chemistry Research 58(2019)8, 2759-2769

Herrmann-Heber, R.; Reinecke, S. F.; Hampel, U.;
Dynamic Aeration for Improved Oxygen Mass Transfer in the Wastewater Treatment Process
Chemical Engineering Journal (2019)

Wiedemann, P.; Döß, A.; Schleicher, E.; Hampel, U.;
Fuzzy flow pattern identification in horizontal air-water two-phase flow based on wire-mesh sensor data
International Journal of Multiphase Flow 117(2019), 153-162

Sarker, D.; Ding, W.; Hampel, U.;
Role of surface characteristics on bubble growth during subcooled nucleate boiling on vertical heaters.
Applied Thermal Engineering 153(2019), 565-574

Sarker, D.; Ding, W.; Franz, R.; Varlamova, O.; Kovats, P.; Zähringer, K.; Hampel, U.;
Investigations on the effects of heater surface characteristics on the bubble waiting period during nucleate boiling at low subcooling
Experimental Thermal and Fluid Science 101(2019), 76-86

Fan, Y.; Pereyra, E.; Sarica, C.; Schleicher, E.; Hampel, U.;
Analysis of Flow Pattern Transition from Segregated to Slug flow in Upward Inclined Pipes
International Journal of Multiphase Flow 115(2019), 19-39

Sohr, J.; Schubert, M.; Flechsig, S.; Kenig, E. Y.; Hampel, U.;
Experimental investigation of the froth height in columns with sandwich packings
Chemie Ingenieur Technik 91(2019)1-2, 139-144

Flechsig, S.; Borgolte, T.; Utchenko, Y.; Sohr, J.; Schubert, M.; Hampel, U.; Kenig, E. Y.;
Rate-based-Modellierung von CO₂-Absorptionskolonnen mit Anstaupackungen
Chemie Ingenieur Technik 91(2019)1-2, 125-138

Willms, T.; Kryk, H.; Hampel, U.;
Microreactor Studies for Efficient Organic Oxidation Processes
Catalysis Today (2019)

Groß, K.; Bieberle, A.; Gladyszewski, K.; Schubert, M.; Hampel, U.; Skiborowski, M.; Górak, A.; (Editors)
Analysis of flow patterns in high gravity equipment using gamma-ray computed tomography
Chemie Ingenieur Technik 91(2019)7, 1032-1040

Unger, S.; Beyer, M.; Arlit, M.; Stasch, P.; Hampel, U.;
An experimental investigation on the air-side heat transfer and flow resistance of finned short oval tubes at different tube tilt angles
International Journal of Thermal Sciences 140(2019), 225-237

Willms, T.; Kryk, H.; Oertel, J.; Hempel, C.; Hampel, U.; Knitt, F.;
On the thermal decomposition of tert.-butyl hydroperoxide, its sensitivity to metals and its kinetics, studied by thermoanalytic methods.
Thermochimica Acta 672(2019), 25-42

2018

Vishwakarma, V.; Schubert, M.; Hampel, U.;
A novel RTD compartment model for tray efficiency predictions
Chemical Engineering Transactions 69(2018), 331-336

Hampel, U.; Kratzsch, A.; Rachamin, R.; Wagner, M.; Schmidt, S.; Fiß, D.; Reinicke, S.;
Investigations on potential methods for the long-term monitoring of the state of fuel elements in dry storage casks
Kerntechnik 83(2018)6, 513-522

Wondrak, T.; Hampel, U.; Ratajczak, M.; Glavinić, I.; Stefani, F.; Eckert, S.; van der Plas, D.; Pennerstorfer, P.; Muttakin, I.; Soleimani, M.; Abouelazayem, S.; Hlava, J.; Blishchik, A.; Kenjeres, S.;
Real-time control of the mould flow in a model of continuous casting in frame of the TOMOCON project
IOP Conference Series: Materials Science and Engineering 424(2018), 012003

Ding, W.; Krepper, E.; Hampel, U.;
The Implementation of an Activated Temperature Dependent Wall Boiling Model in an Eulerian-Eulerian Computational Fluid Dynamic Approach for Predicting the Wall Boiling Process
Nuclear Technology 205(2018), 23-32

Zhang, Y.; Leyer, S.; Geißler, T.; Hampel, U.;
Nachrechnung von Kondensationsversuchen in der COSMEA-Versuchsanlage mit dem Programm ATHLET
Kerntechnik 83(2018)3, 208-214

Sohr, J.; Schubert, M.; Flechsig, S.; Kenig, E. Y.; Hampel, U.;
Experimental investigation of the froth height in columns with sandwich packings
Chemie Ingenieur Technik (2019)

Mohammmed, I.; Hampel, U.;
Wetting fraction in a tubular reactor with solid foam packing and gas/liquid co-current downflow
Catalysts 8(2018)9, 396

Bauer, D.; Barthel, F.; Hampel, U.;
High-speed X-ray CT imaging of a strongly cavitating nozzle flow
Journal of Physics Communications 2(2018), 075009

Ding, W.; Krepper, E.; Hampel, U.;
Evaluation of the microlayer contribution to bubble growth in horizontal pool boiling with a mechanistic model that considers dynamic contact angle and base expansion
International Journal of Heat and Fluid Flow 72(2018), 274-287

Ding, W.; Geißler, T.; Krepper, E.; Hampel, U.;
Critical heat flux as a mass flux dependent local or global phenomenon: Theoretical analysis and experimental confirmation
International Journal of Thermal Sciences 130(2018), 200-207

Bieberle, A.; Neumann, M.; Hampel, U.;
Advanced process-synchronized computed tomography for the investigation of periodic processes
Review of Scientific Instruments 89(2018), 073111

Möller, F.; Macisaac, A.; Lau, Y. M.; Schleicher, E.; Hampel, U.; Schubert, M.;
Advanced Analysis of Liquid Dispersion and Gas-Liquid Mass Transfer in a Bubble Column with Dense Vertical Internals
Chemical Engineering Research and Design 134(2018), 575-588

Sohr, J.; Schubert, M.; Flechsig, S.; Kenig, E. Y.; Hampel, U.;
Experimental investigation of fluid dynamics in sandwich packings with ultrafast X-ray tomography
Chemical Engineering Transactions 69(2018), 727

Flechsig, S.; Sohr, J.; Schubert, M.; Hampel, U.; Kenig, E. Y.;
Rate-based modelling of CO2 absorption with sandwich packings
Chemical Engineering Transactions 69(2018), 169

Waktola, S.; Bieberle, A.; Barthel, F.; Bieberle, M.; Hampel, U.; Grudzień, K.; Babout, L.;
A new data processing approach to study particle motion using ultrafast X-ray tomography scanner: case study of gravitational mass flow
Experiments in Fluids 69(2018), 59-69

Lecrivain, G.; Kotani, Y.; Yamamoto, R.; Hampel, U.; Taniguchi, T.;
Diffuse interface model to simulate the rise of a fluid droplet across a cloud of particles
Physical Review Fluids 3(2018)9, 094002

Reinecke, S. F.; Höffmann, A. K.; Stachowske, M.; Hampel, U.; Ehrhard, P.;
Effizienzsteigerung von Kläranlagen - Vorstellung von Mess- und Simulationstechnischen Methoden
GIT Labor-Fachzeitschrift 62(2018)4, 53-56

Nedeltchev, S.; Möller, F.; Hampel, U.; Schubert, M.;
Flow Regime Transitions in a Bubble Column with Internals Based On a Novel Approach
Journal of Chemical Engineering of Japan 51(2018)4, 373-382

Möller, F.; Lau, Y. M.; Seiler, T.; Hampel, U.; Schubert, M.;
A Study on the Influence of the Tube Layout on Sub-channel Hydrodynamics in a Bubble Column with Internals
Chemical Engineering Science 179(2018), 265-283

Lau, Y. M.; Möller, F.; Hampel, U.; Schubert, M.;
Ultrafast X-ray tomographic imaging of multiphase flow in bubble columns - Part 2: Characterisation of bubbles in the dense regime
International Journal of Multiphase Flow 104(2018), 272-285

Lau, Y. M.; Hampel, U.; Schubert, M.;
Ultrafast X-ray tomographic imaging of bubbly flow - Part 1: Image processing and reconstruction comparison
International Journal of Multiphase Flow 104(2018), 258-271

Willms, T.; Kryk, H.; Hampel, U.;
Partial Isobutane Oxidation to tert-Butyl Hydroperoxide in a Micro Reactor - Comparison of DTBP and Aqueous TBHP as Initiator
Chemie Ingenieur Technik 90(2018)5, 731-735

Ding, W.; Krepper, E.; Hampel, U.;
Quantitative prediction of critical heat flux initiation in pool and flow boiling
International Journal of Thermal Sciences 125(2018), 121-131

Unger, S.; Krepper, E.; Hampel, U.;
Numerical analysis of heat exchanger designs for passive spent fuel pool cooling to ambient air
Nuclear Engineering and Design 333(2018), 224-234

Mohammed, I.; Werner, A.; Schubert, M.; Hampel, U.;
Enzymatic Decolourization of Water Using Loofa Sponge as Cellular Carrier: Immobilization and Dye Degradation Performance
Canadian Journal of Chemical Engeneering 96(2018), 2321-2333

Furuya, M.; Kanai, T.; Arai, T.; Takiguchi, H.; Prasser, H.-M.; Hampel, U.; Schleicher, E.;
Three-dimensional velocity vector determination algorithm for individual bubble identified with Wire-Mesh Sensors
Nuclear Engineering and Design 336(2018), 74-79

Willms, T.; Kryk, H.; Wiezorek, M.; Hampel, U.;
Development of a modular micro reactor for the partial hydrocarbon oxidation
Chemical Engineering Communications 205(2018)3, 269-280

Vishwakarma, V.; Schubert, M.; Hampel, U.;
Assessment of separation efficiency modeling and visualization approaches pertaining to flow and mixing patterns on distillation trays
Chemical Engineering Science 185(2018), 182-208

Banowski, M.; Hampel, U.; Krepper, E.; Beyer, M.; Lucas, D.;
Experimental Investigation of Two-Phase Pipe Flow with Ultrafast X-ray Tomography and comparison with state-of-the-art CFD simulation
Nuclear Engineering and Design 336(2018), 90-104

Arlit, M.; Partmann, C.; Schleicher, E.; Schuster, C.; Hurtado, A.; Hampel, U.;
Instrumentation for Experiments on a Fuel Element Mock-Up for the study of Thermal Hydraulics for Loss of Cooling or Coolant Scenarios in Spent Fuel Pools
Nuclear Engineering and Design 336(2018), 105-111

Seidel, T.; Beyer, M.; Lucas, D.; Hampel, U.;
Experimental Studies on high-pressure high-temperature Contact-Condensation at falling jets in the TOPFLOW Pressure-Tank
Nuclear Engineering and Design (2018)336, 54-63

Konheiser, J.; Rachamin, R.; Brachem, C.; Hampel, U.;
Feasibility Study for Detection of Reactor State Changes during Severe Accidents via External Gamma Radiation Measurements
Annals of Nuclear Energy 114(2018), 175-180

2017

Kesana, N. R.; Parsi, M.; Vieira, R. E.; Azzopardi, B.; Schleicher, E.; Mclaury, B. S.; Shirazi, S. A.; Hampel, U.
Visualization of gas-liquid multiphase pseudo-slug flow using Wire-Mesh Sensor
Journal of Natural Gas Science and Engineering 46(2017), 477-490

Furuya, M.; Kanai, T.; Arai, T.; Takiguchi, H.; Prasser, H.-M.; Hampel, U.; Schleicher, E.
Three-dimensional velocity vector determination algorithm for individual bubble identified with Wire-Mesh Sensors
Nuclear Engineering and Design (2018)

Willms, T.; Kryk, H.; Wiezorek, M.; Hampel, U.
Development of a modular micro reactor for the partial hydrocarbon oxidation
Chemical Engineering Communications 205(2018)3, 269-280

Haghnegahdar, M.; Boden, S.; Hampel, U.
Experimental analysis of Taylor bubble behavior and mass transfer during lateral oscillation of a vertical milli-channel
Chemical Engineering Journal 326(2017), 308-317

Zalucky, J.; Schubert, M.; Lange, R.; Hampel, U.
Dynamic liquid-solid mass transfer in solid foam packed reactors at trickle and pulse flow
Industrial & Engineering Chemistry Research 56(2017)45, 13190-13205

Subramanian, K.; Zalucky, J.; Schubert, M.; Lucas, D.; Hampel, U.
An Eulerian-Eulerian Computational Approach for Simulating Descending Gas-Liquid Flows in Reactors with Solid Foam Internals
Chemical Engineering & Technology 40(2017)11, 2044-2057

Banowski, M.; Patmonoaji, A.; Lucas, D.; Hampel, U.
A novel fuzzy-logic based method for determination of individual bubble velocity and size from dual-plane ultrafast X-ray tomography data of two-phase flow
International Journal of Multiphase Flow 96(2017), 144-160

Meitzner, C.; Hilpmann, G.; Schäfer, T.; Haase, S.; Lange, M.; Hampel, U.
Homogeneous gas-liquid distribution for monolithic structures via a needle distributor
Chemical Engineering & Technology 40(2017)11, 2058-2066

Arlit, M.; Schleicher, E.; Hampel, U.
Thermal Anemometry Grid Sensor
Sensors 17(2017), 1663

Döß, A.; Schubert, M.; Bieberle, A.; Hampel, U.
Non-invasive determination of gas phase dispersion coefficients in bubble columns using periodic gas flow modulation
Chemical Engineering Science 171(2017), 256-270

Arlit, M.; Partmann, C.; Schleicher, E.; Schuster, C.; Hurtado, A.; Hampel, U.
Instrumentation for Experiments on a Fuel Element Mock-Up for the study of Thermal Hydraulics for Loss of Cooling or Coolant Scenarios in Spent Fuel Pools
Nuclear Engineering and Design (2018)

Seidel, T.; Beyer, M.; Lucas, D.; Hampel, U.
Experimental Studies on high-pressure high-temperature Contact-Condensation at falling jets in the TOPFLOW Pressure-Tank
Nuclear Engineering and Design (2018)

Zalucky, J.; Wagner, M.; Schubert, M.; Lange, R.; Hampel, U.
Hydrodynamics of descending gas-liquid flows in solid foams: Liquid holdup, multiphase pressure drop and radial dispersion
Chemical Engineering Science 168(2017), 480-494

Sarker, D.; Franz, R.; Ding, W.; Hampel, U.
Single Bubble Dynamics during Subcooled Nucleate Boiling on a Vertical Heater Surface: An Experimental Analysis of the Effects of Surface Characteristics
International Journal of Heat and Mass Transfer 109(2017), 907-921

Möller, F.; Seiler, T.; Lau, Y. M.; Weber, M.; Weber, M.; Hampel, U.; Schubert, M.
Performance comparison between different sparger plate orifice patterns: Hydrodynamic investigation using ultrafast X-ray tomography
Chemical Engineering Journal 316(2017), 857-871

Kipping, R.; Kryk, H.; Schleicher, E.; Gustke, M.; Hampel, U.
Application of wire-mesh sensor for the study of chemical species conversion in a bubble column during chemical absorption of carbon dioxide in sodium hydroxide
Chemical Engineering & Technology 40(2017)8, 1425-1433

Azizi, S.; Yadav, A.; Lau, Y. M.; Hampel, U.; Roy, S.; Schubert, M.
On the experimental investigation of gas-liquid flow in bubble columns using ultrafast X-ray tomography and radioactive particle tracking
Chemical Engineering Science 170(2017), 320-331

Nedeltchev, S.; Hampel, U.; Schubert, M.
Extraction of both information and reconstruction entropies from ultrafast x-ray tomography data in a bubble column
Chemical Engineering Science 170(2017), 225-233

Hampel, U.
Editorial for special issue on process tomography in flow measurement and instrumentation
Flow Measurement and Instrumentation 53(2017)A, 1-3

Reinecke, S. F.; Jobst, K.; Hampel, U.
Untersuchung der Hydrodynamik von ovalen Biogasreaktoren mit instrumentierten Strömungsfolgern
Chemie Ingenieur Technik 89(2017)4, 464-469

Lecrivain, G.; Yamamoto, R.; Hampel, U.; Taniguchi, T.
Direct numerical simulation of an arbitrarily shaped particle at a fluidic interface
Physical Review E 95(2017), 063107

Willms, T.; Kryk, H.; Oertel, J.; Lu, X.; Hampel, U.
Reactivity of t-butyl hydroperoxide and t-butyl peroxide towards reactor materials measured by a microcalorimetric method at 30 °C.
Journal of Thermal Analysis and Calorimetry 128(2017)1, 319-333

Zalucky, J.; Claußnitzer, T.; Schubert, M.; Lange, R.; Hampel, U.
Pulse Flow in Solid Foam Packed Reactors: Analysis of Morphology and Key Characteristics
Chemical Engineering Journal 307(2017), 339-352

Schäfer, T.; Neumann, M.; Bieberle, A.; Hampel, U.
Experimental investigations on a common centrifugal pump operating under gas entrainment conditions
Nuclear Engineering and Design 316(2017), 1-8

Konheiser, J.; Rachamin, R.; Brachem, C.; Hampel, U.
Feasibility Study for Detection of Reactor State Changes during Severe Accidents via External Gamma Radiation Measurements
Annals of Nuclear Energy 114(2018), 175-180

Sommer, A.-E.; Wagner, M.; Reinecke, S.; Bieberle, M.; Barthel, F.; Hampel, U.
Analysis of activated sludge aerated by membrane and monolithic spargers with ultrafast X-ray tomography
Flow Measurement and Instrumentation 53A(2017), 18-27

Wagner, M.; Bieberle, A.; Bieberle, M.; Hampel, U.
Dynamic bias error correction in gamma-ray computed tomography
Flow Measurement and Instrumentation 53(2017), 141-146

Bieberle, A.; Frust, T.; Wagner, M.; Bieberle, M.; Hampel, U.
Data processing performance analysis for ultrafast electron beam X-ray CT using parallel processing hardware architectures
Flow Measurement and Instrumentation 53(2017), 180-188

Boden, S.; Haghnegahdar, M.; Hampel, U.
Measurement of Taylor bubble shape in square channel by microfocus X-ray computed tomography for investigation of mass transfer
Flow Measurement and Instrumentation 53(2017), 49-55

Banowski, M.; Beyer, M.; Szalinski, L.; Lucas, D.; Hampel, U.
Comparative study of ultrafast X-ray tomography and wire-mesh sensors for vertical gas-liquid pipe flows
Flow Measurement and Instrumentation 53(2017), 95-106

Reinecke, S.; Deutschmann, A.; Jobst, K.; Hampel, U.
Macro-Mixing characterisation of a stirred model fermenter of non-NEWTONIAN liquid by flow following sensor particles and ERT
Chemical Engineering Research and Design 118(2017), 1-11

2016

Haghnegahdar, M.; Boden, S.; Hampel, U.
Investigation of surfactant effect on the bubble shape and mass transfer in a milli-channel using high-resolution microfocus X-ray imaging
International Journal of Multiphase Flow 87(2016), 184-196

Reinecke, S. F.; Hampel, U.
Instrumented flow-following sensor particles with magnetic position detection and buoyancy control
Journal of Sensors and Sensor Systems 5(2016), 213-220

Nedeltchev, S.; Hampel, U.; Schubert, M.
Investigation of the Radial Effect On the Transition Velocities in a Bubble Column Based On the Modified Shannon Entropy
Chemical Engineering Research and Design 115(2016), 303-309

Parsi, M.; Agrawal, M.; Srinivasan, V.; Vieira, R. E.; Torres, C. F.; Mclaury, B. S.; Shirazi, S. A.; Schleicher, E.; Hampel, U.
Assessment of a hybrid CFD model for simulation of complex vertical upward gas-liquid churn flow
Chemical Engineering Research and Design 105(2016), 71-84

Schubert, M.; Piechotta, M.; Beyer, M.; Schleicher, E.; Hampel, U.; Paschold, J.
An imaging technique for characterization of fluid flow pattern on industrial-scale column sieve trays
Chemical Engineering Research and Design 111(2016), 138-146

Schubert, M.; Haase, S.; Lange, R.; Kost, S.; Salmi, T.; Hampel, U.
Maldistribution susceptibility of monolith reactors: Case study of glucose hydrogenation performance
AIChE Journal 62(2016)12, 4346-4364

Schäfer, T.; Meitzner, C.; Lange, R.; Hampel, U.
A study of two-phase flow in monoliths using ultrafast single-slice X-ray computed tomography
International Journal of Multiphase Flow 86(2016), 56-65

Wagner, M.; Bieberle, A.; Bieberle, M.; Hampel, U.
Dynamic bias error correction in gamma-ray computed tomography
Flow Measurement and Instrumentation 53(2017), 141-146

Willms, T.; Kryk, H.; Hampel, U.
The gas chromatographic analysis of the reaction products of the partial isobutane oxidation as a two phase process.
Journal of Chromatography A 1458(2016), 126-135

Kipping, R.; Brito, R.; Schleicher, E.; Hampel, U.
Developments for the application of the Wire-Mesh Sensor in industries
International Journal of Multiphase Flow 85(2016), 86-95

Lecrivain, G.; Yamamoto, R.; Hampel, U.; Taniguchi, T.
Direct numerical simulation of a particle attachment to an immersed bubble
Physics of Fluids 28(2016), 083301

Haghnegahdar, M.; Boden, S.; Hampel, U.
Mass transfer measurement in a square milli-channel and comparison with results from a circular channel
International Journal of Heat and Mass Transfer 101(2016), 251-260

Haghnegahdar, M.; Boden, S.; Hampel, U.
Investigation of mass transfer in milli-channels using high-resolution microfocus X-ray imaging
International Journal of Heat and Mass Transfer 93(2016), 653-664

Lecrivain, G.; Rayan, R.; Hurtado, A.; Hampel, U.
Using quasi-DNS to investigate the deposition of elongated aerosol particles in a wavy channel flow
Computers & Fluids 124(2016), 78-85

Neumann, M.; Schäfer, T.; Bieberle, A.; Hampel, U.
An experimental study on the gas entrainment in horizontally and vertically installed centrifugal pumps
Journal of Fluids Engineering - Transactions of the ASME 138(2016)9, 091301

Dos Santos, E. N.; Schleicher, E.; Reinecke, S.; Hampel, U.; Da Silva, M. J.
Quantitative cross-sectional measurement of solid concentration distribution in slurries using wire-mesh sensor
Measurement Science and Technology 27(2016)1, 015301

Bieberle, M.; Barthel, F.
Combined phase distribution and particle velocity measurement in spout fluidized beds by ultrafast X-ray computed tomography
Chemical Engineering Journal 285(2016), 218-227

Hampel, U.; Wagner, M.; Bieberle, M.
Correct averaging in transmission radiography: analysis of the inverse problem
Computer Physics Communications 202(2016), 196-203

2015

Cheng, X.; Batta, A.; Bandini, G.; Roelofs, F.; van Tichelen, K.; Gerschenfeld, A.; Prasser, M.; Papukchiev, A.; Hampel, U.; Ma, W. M.
European activities on crosscutting thermal-hydraulic phenomena for innovative nuclear systems
Nuclear Engineering and Design 290(2015), 2-12

Zalucky, J.; Möller, F.; Schubert, M.; Hampel, U.
Flow regime transition in open-cell solid foam packed reactors: Adaption of the relative permeability concept and experimental validation
Industrial & Engineering Chemistry Research 54(2015)40, 9708-9721

Bieberle, A.; Schäfer, T.; Neumann, M.; Hampel, U.
Validation of high-resolution gamma-ray computed tomography for quantitative gas holdup measurements in centrifugal pumps
Measurement Science and Technology 26(2015), 095304

Parsi, M.; Vieira, R. E.; Torres, C. F.; Kesana, N. R.; Mclaury, B. S.; Shirazi, S. A.; Schleicher, E.; Hampel, U.
Experimental investigation of interfacial structures within churn flow using a dual wire-mesh sensor
International Journal of Multiphase Flow 73(2015), 155-170

Vieira, R. E.; Parsi, M.; Mclaury, B. S.; Shirazi, S. A.; Torres, C. F.; Schleicher, E.; Hampel, U.
Experimental Characterization of Vertical Downward Two-Phase Annular Flows Using Wire-Mesh Sensor
Chemical Engineering Science 134(2015), 324-339

Parsi, M.; Vieira, R. E.; Torres, C. F.; Kesana, N. R.; Mclaury, B. S.; Shirazi, S. A.; Schleicher, E.; Hampel, U.
On the effect of liquid viscosity on interfacial structures within churn flow: experimental study using Wire Mesh Sensor
Chemical Engineering Science 130(2015), 221-238

Dos Santos, E. N.; Vendruscolo, T. P.; Morales, R. E. M.; Schleicher, E.; Hampel, U.; Da Silva, M. J.
Dual-modality wire-mesh sensor for visualization of multiphase flows
Measurement Science and Technology 26(2015)10, 105302

Vieira, R. E.; Parsi, M.; Torres, C. F.; Mclaury, B. S.; Shirazi, S. A.; Schleicher, E.; Hampel, U.
Experimental Characterization of Vertical Gas-Liquid Pipe Flow For Annular and Liquid Loading Conditions Using Dual Wire-Mesh Sensor
Experimental Thermal and Fluid Science 64(2015), 81-93

Bieberle, A.; Schlottke, J.; Spies, A.; Schultheiss, G.; Banzhaf, M.; Kuehnel, W.; Hampel, U.
Hydrodynamics analysis in micro-channels of a viscous coupling using gamma-ray computed tomography
Flow Measurement and Instrumentation 45(2015), 288-297

Lecrivain, G.; Petrucci, G.; Rudolph, M.; Hampel, U.; Yamamoto, R.
Attachment of solid elongated particles on the surface of a stationary gas bubble
International Journal of Multiphase Flow 71(2015), 83-93

Wagner, M.; Barthel, F.; Zalucky, J.; Bieberle, M.; Hampel, U.
Scatter analysis and correction for ultrafast X-ray tomography
Philosophical Transactions of the Royal Society A 373(2015), 20140396

Schäfer, T.; Bieberle, A.; Neumann, M.; Hampel, U.
Application of gamma-ray computed tomography for the analysis of gas holdup distributions in centrifugal pumps
Flow Measurement and Instrumentation 46(2015), 262-267

Bieberle, M.; Hampel, U.
Level-set reconstruction algorithm for ultrafast limited angle X-ray computed tomography of two-phase flows
Philosophical Transactions of the Royal Society A 373(2015), 20140395

Nedeltchev, S. N.; Rabha, S.; Hampel, U.; Schubert, M.
A new statistical parameter for identification of the main transition velocities in bubble columns
Chemical Engineering & Technology 38(2015), 1940-1946

Höhne, T.; Geissler, T.; Bieberle, A.; Hampel, U.
Numerical modeling of a horizontal annular flow experiment using a droplet entrainment model
Annals of Nuclear Energy 77(2015), 351-360

Barth, T.; Lecrivain, G.; Jayaraju, S. T.; Hampel, U.
Particle deposition and resuspension in gas-cooled reactors – Activity overview of the two European research projects THINS and ARCHER
Nuclear Engineering and Design 290(2015), 127-134

Rollbusch, P.; Becker, M.; Ludwig, M.; Bieberle, A.; Grünewald, M.; Hampel, U.; Franke, R.
Experimental investigation of the influence of column scale, gas density and liquid properties on gas holdup in bubble columns
International Journal of Multiphase Flow 75(2015), 88-106

Zidouni, F.; Krepper, E.; Rzehak, R.; Rabha, S.; Schubert, M.; Hampel, U.
Simulation of gas-liquid flow in a helical static mixer
Chemical Engineering Science 137(2015), 476-486

Rabha, S.; Schubert, M.; Grugel, F.; Banowski, M.; Hampel, U.
Visualization and quantitative analysis of dispersive mixing by a helical static mixer in upward co-current gas-liquid flow
Chemical Engineering Journal 262(2015), 527-540

2014

Lifante, C.; Krull, B.; Frank, T.; Franz, R.; Hampel, U.
3 × 3 rod bundle investigations, CFD single-phase numerical simulations
Nuclear Engineering and Design 279, 60 (2014)

Vieira, R. E.; Kesana, N. R.; Torres, C. F.; McLaury, B. S.; Shirazi, S. A.; Schleicher, E.; Hampel, U.
Experimental Investigation of Horizontal Gas–Liquid Stratified and Annular Flow Using Wire-Mesh Sensor
Journal of Fluids Engineering - Transactions of the ASME 136, FE-13-1571 (2014)

Rabha, S.; Schubert, M.; Hampel, U.
Regime transition in viscous and pseudo viscous systems: A comparative study
AIChE Journal 60, 3079 (2014)

Lecrivain, G.; Vitsas, A.; Boudouvis, A. G.; Hampel, U.
Simulation of multilayer particle resuspension in an obstructed channel flow
Powder Technology 263, 142 (2014)

Lecrivain, G.; Barry, L.; Hampel, U.
Three-dimensional simulation of multilayer particle deposition in an obstructed channel flow
Powder Technology 258, 134 (2014)

Vieira, R. E.; Kesana, N. R.; Torres, C. F.; Mclaury, B. S.; Shirazi, S. A.; Schleicher, E.; Hampel, U.
Experimental Investigation of the Effect of 90 Degrees Standard Elbow on Horizontal Gas-Liquid Stratified and Annular Flow Characteristics using Dual Wire Mesh Sensors
Experimental Thermal and Fluid Science 59, 72 (2014)

Barth, T.; Preuß, J.; Müller, G.; Hampel, U.
Single particle resuspension experiments in turbulent channel flows
Journal of Aerosol Science 71, 40 (2014)

Nedeltchev, S.; Schubert, M.; Donath, T.; Rabha, S.; Hampel, U.
New evidence for the mixing length concept in a narrow bubble column operated in the transition regime
Journal of Chemical Engineering of Japan 47, 722 (2014)

Verma, V.; Padding, J. T.; Deen, N. G.; Kuipers, J. A. M.; Bieberle, M.; Barthel, F.; Wagner, M.; Hampel, U.
Bubble dynamics in a 3-D gas-solid fluidized bed using ultrafast electron beam X-ray tomography and two-fluid model
AIChE Journal 60, 1632 (2014)

Boden, S.; Dos Santos Rolo, T.; Baumbach, T.; Hampel, U.
Synchrotron radiation microtomography of Taylor bubbles in capillary two-phase flow
Experiments in Fluids 55, 1768 (2014)

Barth, T.; Kulenkampff, J.; Bras, S.; Gründig, M.; Lippmann-Pipke, J.; Hampel, U.
Positron emission tomography in pebble beds. part 2: graphite particle deposition and resuspension
Nuclear Engineering and Design 267, 227 (2014)

Lecrivain, G.; Drapeau-Martin, S.; Barth, T.; Hampel, U.
Numerical simulation of multilayer deposition in an obstructed channel flow
Advanced Powder Technology 25, 310 (2014)

Vieira, R. E.; Kesana, N. R.; Torres, C. F.; Mclaury, B. S.; Shirazi, S. A.; Schleicher, E.; Hampel, U.
Experimental Investigation of Horizontal Gas-Liquid Stratified and Annular Flow using Wire Mesh Sensor
Journal of Fluids Engineering - Transactions of the ASME 136, 121301 (2014)

Marschall, H.; Boden, S.; Lehrenfeld, C.; Falconi Delgado, C. J.; Hampel, U.; Reusken, A.; Wörner, M.; Bothe, D.
Validation of Interface Capturing and Tracking Techniques with different Surface Tension Treatments against a Taylor Bubble Benchmark Problem
Computers & Fluids 102, 336 (2014)

Barth, T.; Ludwig, M.; Kulenkampff, J.; Gründig, M.; Franke, K.; Lippmann-Pipke, J.; Hampel, U.
Positron emission tomography in pebble beds. Part 1: Liquid particle deposition
Nuclear Engineering and Design 267, 218 (2014)

2013

Barthel, F.; Franz, R.; Hampel, U.
Experimental investigations of single and two-phase flow in a heated rod bundle
Kerntechnik 78(2013)1, 110316

Bieberle, A.; Nehring, H.; Berger, R.; Arlit, M.; Härting, H.-U.; Schubert, M.; Hampel, U.
Compact high-resolution gamma-ray computed tomography system for multiphase flow studies
Review of Scientific Instruments 84(2013), 033106

Janzen, A.; Schubert, M.; Barthel, F.; Hampel, U.; Kenig, E. Y.
Investigation of dynamic liquid distribution and hold-up in structured packings using ultrafast electron beam X-ray tomography
Chemical Engineering and Processing 66(2013), 20-26

Barth, T.; Reiche, M.; Banowski, M.; Oppermann, M.; Hampel, U.
Experimental investigation of multilayer particle deposition and resuspension between periodic steps in turbulent flows
Journal of Aerosol Science 64(2013), 111-124

Barth, T.; Lecrivain, G.; Hampel, U.
Particle deposition study in a horizontal turbulent duct flow using optical microscopy and particle size spectrometry
Journal of Aerosol Science 60(2013), 47-54

Rabha, S.; Schubert, M.; Hampel, U.
Hydrodynamic studies in slurry bubble columns: An experimental and numerical study
Chemie Ingenieur Technik 85(2013)7, 1092-1098

Rabha, S.; Schubert, M.; Hampel, U.
Intrinsic flow behaviour in a slurry bubble column: A comprehensive study on the effect of particle properties
Chemical Engineering Science 93(2013), 401-411

Bieberle, A.; Härting, H.-U.; Rabha, S.; Schubert, M.; Hampel, U.
Gamma-ray computed tomography for imaging of multiphase flows
Chemie Ingenieur Technik 85(2013)7, 1002-1011

Hampel, U.; Krepper, E.; Lucas, D.; Beyer, M.; Szalinski, L.; Banowski, M.; Barthel, F.; Hoppe, D.; Bieberle, A.; Barth, T.
High-resolution two-phase flow measurement techniques for the generation of experimental data for CFD code qualification
Kerntechnik 78(2013)1, 9-15

Hampel, U.
Editorial for Special Issue IWPT-4 in Flow Measurement and Instrumentation
Flow Measurement and Instrumentation 31(2013), 1-2

Hampel, U.; Dittmeyer, R.; Patyk, A.; Wetzel, T.; Lange, R.; Freund, H.; Schwieger, W.; Grünewald, M.; Schlüter, M.; Petasch, U.
Die Helmholtz-Energie-Allianz “Energieeffiziente Chemische Mehrphasenprozesse”
Chemie Ingenieur Technik 85(2013)7, 992-996

Zhang, Z.; Bieberle, M.; Barthel, F.; Szalinski, L.; Hampel, U.
Investigation of upward cocurrent gas-liquid pipe flow using ultrafast X-ray tomography and wire-mesh sensor
Flow Measurement and Instrumentation 32(2013), 111-118

Rabha, S.; Schubert, M.; Wagner, M.; Lucas, D.; Hampel, U.
Bubble size and radial gas hold-up distributions in a slurry bubble column using ultrafast electron beam X-ray tomography
AIChE Journal 59(2013)5, 1709-1722

Da Silva, M. J.; Hampel, U.
Capacitance wire-mesh sensor applied for the visualization of three-phase gas-liquid-liquid flows
Flow Measurement and Instrumentation 34(2013), 113-117

Reinecke, S.; Kryk, H.; Hampel, U.; Deutschmann, A.; Jobst, K.; Friedrich, E.
Flow following sensor particles – validation and macro-mixing analysis in a stirred fermentation vessel with a highly viscous substrate
Biochemical Engineering Journal 69(2013), 159-171

Tschentscher, R.; Schubert, M.; Bieberle, A.; Nijhuis, T. Alexander; van der Schaaf, J.; Hampel, U.; Schouten, Jaap C.
Gas holdup of rotating foam reactors measured by γ-tomography - effect of solid foam pore size and liquid viscosity
AIChE Journal 59(2013)1, 146-154

Leon, M. A.; Maas, R. J.; Bieberle, A.; Schubert, M.; Nijhuis, T. A.; van der Schaaf, J.; Hampel, U.; Schouten, J. C.
Hydrodynamics and Gas-Liquid Mass Transfer in a Horizontal Rotating Foam Stirrer Reactor
Chemical Engineering Journal 217(2013)1, 10-21

Barth, T.; Ludwig, M.; Kulenkampff, J.; Gründig, M.; Franke, K.; Lippmann-Pipke, J.; Hampel, U.
Study of liquid aerosol particle deposition in pebble beds using positron emission tomography
Nuclear Engineering and Design (2013)

Schäfer, T.; Schubert, M.; Hampel, U.
Temperature grid sensor for the measurement of spatial temperature distributions
Sensors 13(2013)2, 1593-1602