Mesh generation steps:

1. blockMesh
2. surfaceFeatureExtract
3. snappyHexMesh -overwrite 
4. rm -rf 0
5. rm constant/polyMesh/cellLevel
6. rm constant/polyMesh/pointLevel
7. setSet -batch system/setSet.faces_amont_aval
8. createPatch -overwrite -dict system/createPatchDict.amont_aval

Initial conditions:

9. rm -r 0
10. cp -r 0.orig 0
11. setFields

Running the case:

12. decomposePar (set number of processors for your machine in decomposeParDict)
13. mpirun -np XX interFoam -parallel (replace XX with number of processors)
14. reconstructPar
15. paraFoam