snappyHexMesh并行计算步骤

 1 blockMesh    //或者使用ICEM画好网格之后，再fluent3DMeshToFoam XXX.msh也可以
 2 surfaceFeatureExtract   //通过.stl文件得到.eMesh文件
 3 decomposePar
 4 mpirun -np 4 snappyHexMesh -parallel -overwrite 
 5 reconstructParMesh -constant -mergeTol 1E-06 -noZero
 6 checkMesh 
 7 renumberMesh -overwrite
 8 rm -rf process*
 9 decomposePar
10 mpirun -np 4 MPPICFoam -parallel 
11 reconstructPar