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[ICEM] Volume meshing doesn't leave void where subject of cfd is

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Old   December 20, 2017, 13:03
Default Volume meshing doesn't leave void where subject of cfd is
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Evan
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I created a fluid domain around a (3d) car in design modeler, by creating an enclosure so that the solid represents the fluid domain, with a void in the middle to represent the car surface and then imported this into ICEM. When I created the mesh, I noticed that there were mesh elements in this void. How can I prevent mesh elements from forming in this void? Does ICEM differ from ansys meshing here in that there is a step I missed?
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Old   December 21, 2017, 08:20
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There are no boolean operations in ICEM. but you will need to give more details and pictures to get a more accurate and helpful answer.
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Old   December 21, 2017, 10:17
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I use a boolean in design modeler to create the void that is the shape of the truck. When I bring this into ICEM and mesh, the truck shaped void has mesh elements inside of it. Do I need a solid that represents the truck when I import geometry into ICEM?
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Old   December 21, 2017, 10:25
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ICEM is a solid body mesher. you dont need boolean operations.

Create surfaces of ahmed body in ICEM and create another surface part for far field and use body part and name it fluid (option in geometry tab) and put it in between the ahmed body and the far field if you are using unstructured meshing. If you are using structured blocked meshing you dont need to create this as well just use create 3d block called fluid.
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Old   December 21, 2017, 10:35
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ok, so it works differently than ansys mesher in that way? i need a surface for far field and a surface for the ahmed body? then I make a body part for the fluid using those surfaces? I guess I assumed it was more similar to ansys meshing than I should have
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