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[ICEM] problem with hex-grid at inlet/outlets

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Old   August 10, 2011, 08:18
Default problem with hex-grid at inlet/outlets
  #1
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Dear all,

I have got a problem with building a hex-grid using ICEM. For any reason the inlet/outlets of my geometry are not meshed properly (see pics: at one pic the surface is visible, at the other it isnít visible). The grid is limited to a four-sided area inside the almost round surface.
I created surfaces out of the curves at the outlets and associated the edges of the block to these surfaces. Originally I wanted to create an O-grid, but for any reason creating a grid in general doesnít work at all. I already tried different ways of creating the surfaces at the outlets, but didnít succeed. I have the feeling that the outlet surfaces are four-sided instead of round, even though they appear round if I select them. Does anybody have an idea, how I could solve this problem?

Thanks a million in advance!
Lilly
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File Type: jpg strange_outlet.jpg (81.3 KB, 21 views)
File Type: jpg strange_outlet2.jpg (86.0 KB, 16 views)
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Old   August 15, 2011, 11:49
Red face Try this?
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Timothy
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It looks like there is something wrong with your association. The curves that make up your inlet/outlet are all different colors. I think you need to use Blocking>Associate>Associate Edge to Curve before you create the O-grid. For the edges select the four edges of your block and for the curves select all of the edges that make up your outlet/inlet. The edges of your outlet/inlet will all turn the same color. (hopefully you have not already tried this).

Also I think when you got the pictures you had left your surfaces on under geometry. If you turn these off you will give us a better look at your mesh.

Hope that helps,
Timothy
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Old   August 16, 2011, 11:56
Default Thank you!
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Hi Timothy,

thanks a million for your help! You are right! I tried to associate the face of the blocks to the surface (inlet/outlet) and for any reason the results looked strange in this case...but associating the edges to the curves was working fine!
And thank you for the hint concerning "surface" under "geometry"!
Lilly
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