Periodic Hills

Geometry as proposed in [Mellen, Fröhlich, Rodi, Proc. IMACS Conference, Lausanne, 2000]

Test case geometry:

Typical mean streamlines:

GRIDS:

Three grids were used in this reference and later papers by the same and other authors.
The coarsest one yields substantial sensitivity to subgrid-scale and wall modelling as experienced in [Temmermann, Leschziner, Mellen, Fröhlich, IJHFF,2003].

The medium grid and the fine grid look as follows.

They can be downloaded here: wall-function_grid  wall-resolving_grid  README.txt  readgrids.f 

RESULTS:

Reference data from [Mellen, Fröhlich, Rodi, Proc. IMACS Conference, 2000] can be downloaded here.

These data, together with a companion simulation of Temmerman and Leschziner were analyzed in detail in a recent paper .

ANIMATIONS:

3D Visualization of coherent structures by means of a pressure-perturbation surface here .
2D Visualization of the streamwise velocity component in a vertical plane here .

This case served as test case in several benchmarking efforts such as
9th ERCOFTAC Workshop on Refined Turbulence Modelling, Darmstadt, 2001.   Slides
10th ERCOFTAC Workshop on Refined Turbulence Modelling, Poitiers, 2002.