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Old   February 25, 2016, 11:47
Default Import Deformed Geometry into Fluent
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L Gamble
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I'm having a heck of a time here. I'm trying to simulate the fluid flow around a deformed geometry but don't care about the fluid structure interaction
(though I have tried that-takes eons to run). I'd simply like to run a Fluent simulation where the input geometry is a geometry which was created in either Abaqus or Ansys Static Structural. Has anyone successfully done this? I've tried using macros found here:

but the commands either don't work (from link 1) or the imported geometry is always in the undeformed state.

I thought it might just be easier to run the structural simulation in Abaqus and export to .wrl to then save as a .iegs, .step, parasolid, etc. in Solidworks but the geometry is imported with thousands of surfaces which won't form solids meaning that making an enclosure for the fluid doesn't work. The sew and/or fill commands don't fix this either. Parasolids appeared to be the best option since it imported the geometry in the same number of parts in the deformed state that I had in the original file and Ansys even has a tutorial on it ( however it throws errors saying that it results in non-manifold bodies. Perhaps because the checkmark next to import is yellow not green? The problematic geometry says face-face inconsistency

Any suggestions?! I dont know what to do at this point besides go ahead with the real FSI which will take half a day to run just one case.
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Old   February 25, 2016, 13:59
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L Gamble
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In case anyone else has this issue in the future, I found a work-around which won't suffice in many applications. In SolidWorks, I deleted the part causing the face-face inconsistency which happened to be a thin sheet under thermal expansion (which caused the deformation). This sheet was used to generate the deformation of the underlying structure and thus was not crucial to the total geometry of the part. By removing this part in SW and importing this Parasolid file, the geometry was complete (green check mark!) and I was able to continue normally with the CFD process. Ansys/Fluent did struggle with generating the mesh and it wont let me access the Fluent results, but I can view them in the Solution Results section so I'm a happy camper.
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abaqus, ansys, deformed mesh, export, fluent

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