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Old   February 20, 2008, 15:03
Default ICEM meshes inside my wing
  #1
LBRS
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Hi all,

I have a very complex geometry in two parts: wing and body (the root of the wing intersects the body). It is actually only a half bird geometry in a box domain.

Strangely enough, I can make ICEM to mesh outside of the body, but it always meshes inside of the wing. It was written in the tutorials that I have to put a LIVE body point where I want the mesh to be, but it didn't change a lot. I tried several meshing setup.

This is a screenshot, but I'm affraid it's not very clear http://documents.epfl.ch/users/s/se/...ages/icem2.png

How could I enforce ICEM not to mesh inside this surface mesh ?

Kindest regards

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Old   February 20, 2008, 23:59
Default Re: ICEM meshes inside my wing
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A.S.
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Delete the blocks inside the wing
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Old   February 21, 2008, 04:16
Default Re: ICEM meshes inside my wing
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LBRS
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"Delete the blocks inside the wing "

You mean removing the cells manually ? I don't know how to automatically select all these cells...
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Old   February 21, 2008, 06:47
Default Re: ICEM meshes inside my wing
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A.S.
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sorry VORFN the block inside the wing, I did it like that
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Old   February 21, 2008, 08:02
Default Re: ICEM meshes inside my wing
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Charles
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I think there is a misunderstanding here .... Moving blocks to VORFN is for a hexa mesh, and I get the idea from the image that he is building a tetra mesh? Main thing is to make sure that your geometry is clean, i.e. if you run Repair Geometry, you should get red curves only, then put a body point outside the bird's body, and have another go. Make sure that the part of the symmetry plane that intersects the body has been removed. In fact, I am almost sure that is your problem.

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Old   February 21, 2008, 08:32
Default Re: ICEM meshes inside my wing
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A.S.
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Charles and LBRS sorry for the confusion, I had always used ICEM-HEXA and advised based on that.
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Old   February 21, 2008, 10:09
Default Re: ICEM meshes inside my wing
  #7
LBRS
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Thank you a lot for the advides. It seems that a cleaning of the geometry (with a CAD software) really helps.

Also, I have moved the wing a little. Maybe there was holes in the wing outside of the body, which caused the problem.

Now it works much better. Thanx !

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