OpenFOAM-1.5-extend checkMesh problem

josp · June 23, 2009, 05:50

In openfoam extend:

cd $FOAM_TUTORIALS/icoFoam/cavity
blockMesh
checkMesh
...
Mesh OK.

transformPoints -scale "(0.001 0.001 0.001)"
checkMesh
...
***Max skewness = 116.905, 1542 highly skew faces detected which may impair the quality of the results Threshold = 4
<<Writing 1542 skew faces to set skewFaces
Failed 1 mesh checks.

The same procedure works fine under 1.5.x with no errors and the mesh looks ok (which it doesn't in -extend) I did recompile everything but the problem persists. Is there some tolerance settings that I have to change? -scale "(0.01 0.01 0.01)" works fine?

mbeaudoin · June 23, 2009, 17:03

Hi,

I did the exact same sequence of commands you did with my local installation of OpenFOAM-1.5-dev (revision 1294). No tolerances tweaking.

Got no error messages, and the mesh I got after calling transformPoints looks fine too.

My max skewness went from 1e-08 (before transformPoints) to 2 (after transformPoints), which seems to be OK for checkMesh.

" Max skewness = 2 OK. "

Martin

Quote:

Originally Posted by josp

In openfoam extend:

cd $FOAM_TUTORIALS/icoFoam/cavity
blockMesh
checkMesh
...
Mesh OK.

transformPoints -scale "(0.001 0.001 0.001)"
checkMesh
...
***Max skewness = 116.905, 1542 highly skew faces detected which may impair the quality of the results Threshold = 4
<<Writing 1542 skew faces to set skewFaces
Failed 1 mesh checks.

The same procedure works fine under 1.5.x with no errors and the mesh looks ok (which it doesn't in -extend) I did recompile everything but the problem persists. Is there some tolerance settings that I have to change? -scale "(0.01 0.01 0.01)" works fine?

josp · June 24, 2009, 11:41

Hi Martin,

I just tried with a fresh opensuse (x64) install + latest version from svn and now I get the same output as you. Problem was on my side but it's unclear what caused it.

Thank you for your attention!

Regards

Johan

Quote:

Originally Posted by mbeaudoin

Hi,

I did the exact same sequence of commands you did with my local installation of OpenFOAM-1.5-dev (revision 1294). No tolerances tweaking.

Got no error messages, and the mesh I got after calling transformPoints looks fine too.

My max skewness went from 1e-08 (before transformPoints) to 2 (after transformPoints), which seems to be OK for checkMesh.

" Max skewness = 2 OK. "

Martin

June 23, 2009, 05:50	OpenFOAM-1.5-extend checkMesh problem	#1
josp Member Johan Spång Join Date: Mar 2009 Location: Stockholm, Sweden Posts: 35 Rep Power: 17	In openfoam extend: cd $FOAM_TUTORIALS/icoFoam/cavity blockMesh checkMesh ... Mesh OK. transformPoints -scale "(0.001 0.001 0.001)" checkMesh ... ***Max skewness = 116.905, 1542 highly skew faces detected which may impair the quality of the results Threshold = 4 <<Writing 1542 skew faces to set skewFaces Failed 1 mesh checks. The same procedure works fine under 1.5.x with no errors and the mesh looks ok (which it doesn't in -extend) I did recompile everything but the problem persists. Is there some tolerance settings that I have to change? -scale "(0.01 0.01 0.01)" works fine?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem running paraFoam on OpenFOAM 1.5	sonny	OpenFOAM	3	June 6, 2009 20:24
Eureka, OpenFoam 1.5 is running on OpenSUSE11.1	Ahmed	Main CFD Forum	0	March 7, 2009 22:20
OpenFOAM Version 1.5 Released	OpenFOAM discussion board administrator	OpenFOAM Announcements from ESI-OpenCFD	0	July 14, 2008 18:22
[blockMesh] CheckMesh error using a tutorial from OpenFOAM 114 with openFOAM 13	martapajon	OpenFOAM Meshing & Mesh Conversion	7	January 21, 2008 12:52
CFX4.3 -build analysis form	Chie Min	CFX	5	July 12, 2001 23:19