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Problem to run flow around a cylinder - LES case

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Old   August 26, 2014, 08:47
Default Problem to run flow around a cylinder - LES case
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valerio galluzzi
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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:

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-0.00840603 -0.00188235 0.0005)
Neighbour fc0.0142184 0.00530556 0.0005)
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
valerio galluzzi is offline   Reply With Quote


cyclic boundaries, cyclic boundary, cyclic patch, large eddy simulation, openfoam 2.1

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