Learning Forum

[ali akbar]

Hello everybody. I'm new to ansys and I have a problem. How could I make thin surface from an imported geometry in ansys design modeler?

[peteroznewman]

ArraynI'm assuming you imported a solid body. It is not clear what part of the geometry you want to be a thin surface or even what that term means. Surfaces have zero thickness, so adding the word thin doesn't add any meaning.nPerhaps you mean you want a surface on the cross-section to do a 2D CFD model. You already have a face that is a cross-section on the side of the solid. If that is what you want, you must have the surface be in the XY plane. You don't show a triad to know where that is.nIf you use SpaceClaim instead of DesignModeler, it's easy to copy and paste the face of the solid to make a surface, and then use the Move tool to move that surface to the XY plane.nIf you had posted in a Structural category and not the Fluids category, I would assume you wanted to create a midsurface.nIf the solid body has a constant wall thickness, then you would use a midsuface command. Here is a Google search result that has links to many YouTube videos using DesignModeler. nhttps://www.google.com/search?q=designmodeler+midsurface&oq=designmodeler+midsurface&aqs=chrome..69i57j0i22i30.9494j1j15&sourceid=chrome&ie=UTF-8nYou can also use SpaceClaim to create a midsuface. If you don't have a constant wall thickness in the geometry, the command won't work.nn

[ali akbar]

Thank you for help but it's a fluids problem and I want to investigate this perforated plate in an enclosure and I don't want to have a thick solid body.n

[peteroznewman]

Array nOkay, you can create a midsurface to represent the perforated plate. If that is difficult, you can just select the faces on one side of the plate to convert to surfaces and delete the solid.nYou need to create a fluid domain on each side of the perforated plate that is connected at the holes. That could be tricky. I suggest you have the wavy surface without holes to split the fluid domain. Then you have a series of cylindrical solids that represent the holes. Use the cylindrical faces of those to split the faces of the two solids split by the wavy surface. Now all those new faces can be given an Interior boundary condition while the wavy surface is a Walln

[ali akbar]

thank you. it's really helpful.nn