openfoam-cases

This repository contains a set of benchmark problems each in a separate directory as a case that can be simulated by OpenFOAM. The cases are tested with OpenFOAM 8.

Instead of using the built-in mesh generator of OpenFOAM, all cases use meshes generated from Gmsh version 4.4.1 (but exported as "Version 2 ASCII" of the .msh format, otherwise OpenFOAM 8 will have trouble converting them). In this way, simulation results from other code can be compared with OpenFOAM using exactly the same mesh. The companion .geo files that generated the meshes are included in the root directory.

The general steps of running these cases are:

1. copy the case folder to the run folder of the OpenFOAM installation
2. cd into the copied case folder
3. execute gmshToFoam <mesh-file-name.msh>, where <mesh-file-name.msh> is the name of the mesh file contained in the case folder
4. run checkMesh to make sure the mesh has been successfully converted by OpenFOAM
5. move the boundary file, if exists, to the generated constant/polyMesh folder, overwriting the existing one
6. run renumberMesh -overwrite
7. move files of transportProperties, turbulenceProperties, etc., to the generated constant folder
8. run the OpenFOAM application (simpleFoam, icoFoam, ..., etc.) as stated in the /system/controlDict file

List of problems (more to come...)

• cubic cavity

  The problem of lid-driven flow in a cubic cavity as documented in

  H. Ding , C. Shu, K.S. Yeo , and D. Xu, "Numerical computation of three-dimensional incompressible viscous flows in the primitive variable form by local multiquadric differential quadrature method", Comput. Methods Appl. Mech. Engrg, 195 (2006), 516–533

• backward-facing step flow

  The problem of backward-facing step flow as documented in

  B. F. Armaly, F. Durst, J. C. F. Pereira, and B. Schonung, "Experimental and theoretical investigation of backward-facing step flow", J. Fluid Mech., 127 (1983), 473-496

  and

  T. P. Chiang and Tony W. H. Sheu, "A numerical revisit of backward-facing step flow problem", Physics of Fluids, 11(4), 1999, 862-874

• flow around a cylinder

  The 3D case of the problem of flow around a cylinder with circular cross-section as documented in

  M. Schäfer, S. Turek, F. Durst, E. Krause, and R. Rannacher, "Benchmark computations of laminar flow around a cylinder", Flow Simulation with High-Performance Computers II, 1996, 547-566