[blockMesh] checkMesh Failed

Kev10 · January 17, 2017, 09:19

Hello everybody,

At first sorry for my bad english :P

I´m new in OpenFoam and have some problems with blockMesh (checkMesh). I tried to create a rectangle with hex in the blockMeshDict. When i run blockMesh, ididn´t get any failed message, but if i run checkMesh, then i get 4 failed message and i don´t know why.

Maybe someone can help me to understand my mistake ?

Best regards Kev10

Antimony · January 20, 2017, 03:42

Hi,

Your mesh fails the checkMesh test because your mesh is essentially defined inside out. Based on the way you have defined your mesh, there is a clash between the direction you have specified for the 3rd axis and what you get from the right hand rule.

One simple solution would be to define vertices 0 to 3 with z = -1000 (currently what you have defined as 500) and vertices 4 to 7 with z = 500 (what you currently have as -1000). Essentially switch the vertices around and your mesh should be OK

Hope this helps.

Cheers,
Antimony

Kev10 · January 22, 2017, 13:43

Thank you very much Antimony, now it works !!

Best regards

Kev

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January 20, 2017, 03:42		#2
Antimony Senior Member Join Date: Aug 2013 Posts: 407 Rep Power: 15	Hi, Your mesh fails the checkMesh test because your mesh is essentially defined inside out. Based on the way you have defined your mesh, there is a clash between the direction you have specified for the 3rd axis and what you get from the right hand rule. One simple solution would be to define vertices 0 to 3 with z = -1000 (currently what you have defined as 500) and vertices 4 to 7 with z = 500 (what you currently have as -1000). Essentially switch the vertices around and your mesh should be OK Hope this helps. Cheers, Antimony

January 22, 2017, 13:43		#3
Kev10 New Member Kai Müller Join Date: Jan 2017 Posts: 2 Rep Power: 0	Thank you very much Antimony, now it works !! Best regards Kev