The mesh generated in PW18 can't be used for OpenFOAM

goodluckWL · November 22, 2018, 00:04

Hello,
Everyone! When I use the mesh generated in PW16, it works fine in OpenFOAM. But when I do the same operations to generate grids in PW18, it just can't be used in OpenFOAM. The checkMesh is OK, so I don't know what's going wrong

Can anybody help me?
Thank you very much!

tecmul · November 24, 2018, 11:44

Hi, I'm by no means an experienced user of either PW or OF but I haven't had any issues with PW18.2 so far. What exactly is OpenFOAM's problem with your mesh?

goodluckWL · November 25, 2018, 21:58

Quote:

Originally Posted by tecmul

Hi, I'm by no means an experienced user of either PW or OF but I haven't had any issues with PW18.2 so far. What exactly is OpenFOAM's problem with your mesh?

Well, when I export the mesh to OpenFOAM, the checkMesh is ok, but it just doesn't work. Whenever the calculation begins, the Courant number becomes giant, and the calculation stops.

dgarlisch · November 26, 2018, 20:03

Did you run renumberMesh on the files in constant/polyMesh that were exported from Pointwise?

tecmul · November 27, 2018, 13:01

Quote:

Originally Posted by goodluckWL

Well, when I export the mesh to OpenFOAM, the checkMesh is ok, but it just doesn't work. Whenever the calculation begins, the Courant number becomes giant, and the calculation stops.

As David said, running renumberMesh -overwrite should solve the problem.

Can anyone explain why not running renumberMesh causes the calculations to diverge? As far as I know, the command reorders the vertices in such a way that the resulting matrix has most of its non-sparse elements closer to the main diagonal.

November 22, 2018, 00:04	The mesh generated in PW18 can't be used for OpenFOAM	#1
goodluckWL New Member LeiWu Join Date: Nov 2018 Posts: 2 Rep Power: 0	Hello, Everyone! When I use the mesh generated in PW16, it works fine in OpenFOAM. But when I do the same operations to generate grids in PW18, it just can't be used in OpenFOAM. The checkMesh is OK, so I don't know what's going wrong Can anybody help me? Thank you very much!

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November 24, 2018, 11:44		#2
tecmul Member Join Date: Sep 2018 Posts: 53 Rep Power: 8	Hi, I'm by no means an experienced user of either PW or OF but I haven't had any issues with PW18.2 so far. What exactly is OpenFOAM's problem with your mesh?

November 26, 2018, 20:03		#4
dgarlisch Senior Member David Garlisch Join Date: Jan 2013 Location: Fidelity Pointwise, Cadence Design Systems (Fort Worth, Texas Office) Posts: 307 Rep Power: 14	Did you run renumberMesh on the files in constant/polyMesh that were exported from Pointwise?