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Old   October 16, 2008, 05:43
Default face-handedness problem
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Amir
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Hi. I'm working on wind driven turbine ventilator. I tried to generate mesh with Gambit. The dimensions of blades are minimum 0.5 mm. when I import the mesh into fluent after checking the grids the face handedness error appears. I tried Grid>modify-zones>repair-face-handedness but unfortunately its written left-handed can't change, there is node on right-hand side. I tried many times with different size of meshes, but still same error. If anyone could help me to solve this problem I would appreciate it. regards.
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Old   October 16, 2008, 06:46
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Usman
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hi, make sure there are no highly skewed cells in your mesh. check the quality of mesh.
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Old   October 16, 2008, 06:59
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doki
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if the problem remains using different mesh sizes, that might be because a part might be added to the volume by mistake; which in fact should not be included in the volume. one other possibility is need in more decomposing the domain.
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Old   October 16, 2008, 12:54
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Amir
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Hi. Thank you for your respond. I'm trying to generate a mesh without highly skewed cells but it seems impossible due to complexity of geometry. If I'm right, more than 100 times with different methods I tried to eliminate the highly skewed cells but it doesnt work.

There is any way that I can get rid of Face-handedness with skewed cells.?

regards.
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Old   October 16, 2008, 12:59
Default Re: face-handedness problem
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Amir
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Hi. Thanks for your respond.

I tried to change even some part of geometry in order to make it more simple but it didn't solve the face-handedness problem. There is no extra part on my geometry, I checked again. I didn't understand about decomposing the domain. If you could explain more I would appreciate it.

Amir. with regard.
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Old   October 17, 2008, 09:58
Default Re: face-handedness problem
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doki
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if you are sure that there were no extra parts in the domain, the only way to solve problem is to decompose the domain. that means you break down the domain, especially near where the face handedness occurs, and then mesh the whole geometry by meshing each zone separately.
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Old   October 17, 2008, 10:31
Default Re: face-handedness problem
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Amir
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Thank you so much. I'm trying it. I hope it will work.

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