[x86_64leon]

Dear All,

Has anybody tried to run the cavity tutorial on different kinds of meshes ?

We have tried 3 kinds of meshes :
1- Structured mesh created by blockMesh
2- Diagonalized mesh (structured mesh where all hexa cells are splitted in diagonal)
3- Unstructured mesh

The exact same fields, boundary conditions, fvSchemes and fvSolution are used for all meshes. ,Different schemes have been tried without improving results.

Meshes are compared on the basis of velocity profiles along the cavity centerline, either vertical or horizontal. The profiles are extracted on faces intersections using sample (see sampleDict).

Plots show that velocity profiles are :
- Unstructured and structured meshes are somehow close to each other
- Unstructured mesh experiences lots of oscillations
- Diagonalized mesh solution is far from the structured solution, even though the diagonalized mesh is just the structured mesh that has been splitted.

Full cases are joined in this post.