3-D VAWT simulation using pimpleDyMFOAM not working

Naruto · May 29, 2013, 11:00

Dear FOAMers,
Hello everyone. I am currently trying to simulate flow around a VAWT using pimpleDyMFoam. But my solver is not working properly. It is crashing repeatedly. I have used different types of meshing and boundary conditions. But nothing seems to work. After a few time steps pimpleDyMFoam is crashing. Right now I am in a kind of frustrating situation.
Here are my case files: https://dl.dropboxusercontent.com/u/...ne/Turbine.rar

I would appreciate any kind of help.

waku2005 · May 30, 2013, 01:16

Dear Naruto

I also simulate straight Darius type VAWT using AMI.
I think you might have to be check your mesh quality using checkMesh command.
I suspect that meshes of high aspect ratio and high skewness would be found.

Sincerely
waku2005

Naruto · May 30, 2013, 06:49

Thank you for your kind and informative reply. I was a fool to post this thread. Yes you are absolutely right. Just after posting this thread, I checked my mesh using CheckMesh command and I found high skewness and non -orthogonality. I did not check this mesh before because I was quiet sure about the quality of the meshing. I would rebuild the mesh and than try simulation again. I will keep updating this thread.

May 29, 2013, 11:00	3-D VAWT simulation using pimpleDyMFOAM not working	#1
Naruto Member Join Date: Nov 2012 Posts: 62 Rep Power: 14	Dear FOAMers, Hello everyone. I am currently trying to simulate flow around a VAWT using pimpleDyMFoam. But my solver is not working properly. It is crashing repeatedly. I have used different types of meshing and boundary conditions. But nothing seems to work. After a few time steps pimpleDyMFoam is crashing. Right now I am in a kind of frustrating situation. Here are my case files: https://dl.dropboxusercontent.com/u/...ne/Turbine.rar I would appreciate any kind of help.

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May 30, 2013, 01:16		#2
waku2005 Member Join Date: Nov 2009 Posts: 65 Rep Power: 16	Dear Naruto I also simulate straight Darius type VAWT using AMI. I think you might have to be check your mesh quality using checkMesh command. I suspect that meshes of high aspect ratio and high skewness would be found. Sincerely waku2005

May 30, 2013, 06:49		#3
Naruto Member Join Date: Nov 2012 Posts: 62 Rep Power: 14	Thank you for your kind and informative reply. I was a fool to post this thread. Yes you are absolutely right. Just after posting this thread, I checked my mesh using CheckMesh command and I found high skewness and non -orthogonality. I did not check this mesh before because I was quiet sure about the quality of the meshing. I would rebuild the mesh and than try simulation again. I will keep updating this thread.