Surface viscosity in multiphase flow - modeling, numerical analysis and simulations
Multiphase flow systems are strongly influenced by transport processes along the lower dimensional fluidic interface . These processes include e.g. adsorption effects from the bulk phases and transport of species on the interface. Variable surface properties, such as surface tension, can strongly influence the bulk flow. However, there is one crucial aspect to be considered. The interface by its own can also have fluid like properties. In these cases the surface viscosity effect has to be taken into account. Examples can be found in cell membranes, particle-laden fluid interfaces and liquid crystal films. Another everyday example will be familiar to those who can remember playing with soap bubbles and seeing the eye-catching movement on the surface, which clearly indicates fluid-like properties.
This project investigates the theoretical aspects behind the surface viscosity effect and analyzes the interplay of surface flow, surface morphology and surface evolution as well as the hydrodynamic interaction between the surface and bulk flow.
Project duration: 05/2013 - 04/2018
Funded by: DFG (SPP 1506)