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Problem to run flow around a cylinder - LES case |
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valerio galluzzi
Join Date: Jan 2014
Posts: 9
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Hi everyone,
I work on a LES case of a flow around a circular cylinder. I have already set all OpenFOAM files, but I have problems to run it. The geometry is a 3D parallelogram which has inside a circular cylinder, so there is an input face, an output face, an up and a bottom faces and a left and a right faces. The "left&right" face has cyclic type. I did the mesh by gmsh and I imported it using "gmshToFoam" command. I modified the patch inside the constant/polymesh/boundary file: - left&right type cyclic; - (body) Wall type wall then I used "foamUpgradeCyclics" command that created new files inside the 0/ directory. The I used the "decomposePar" command to decompose the domain, but here it is the problem: --> FOAM FATAL ERROR: face 0 area does not match neighbour by 23.2157% -- possible face ordering problem. patch:Left&Right_half0 my area:4.4218e-08 neighbour area:3.50202e-08 matching tolerance:0.0001 Mesh face:1027210 fc ![]() Neighbour fc ![]() If you are certain your matching is correct you can increase the 'matchTolerance' setting in the patch dictionary in the boundary file. Rerun with cyclic debug flag set for more information |
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cyclic boundaries, cyclic boundary, cyclic patch, large eddy simulation, openfoam 2.1 |
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