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Old   September 6, 2022, 08:55
Default Modelling solid/fluids
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Hi,

I am trying to simulate the mid-plane of a battery module (see attached image for schematic). In DM, I created a rectangle with smaller rectangles inside. The smaller rectangles are basically holes, but I'm trying to get Fluent to recognise them as solids with certain material properties. How do I let Fluent know that these rectangles are not 'holes' and are solids instead?

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Old   September 6, 2022, 09:19
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Fill the holes with rectangular geometry. They will be separate parts in DesignModeler. You can combine them into a MultiBody Part to avoid mesh connections as the edge nodes will be shared.

Assign the small rectangular bodies as Solid domains in Fluent with the solid material you need.
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Old   September 7, 2022, 12:56
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Hi,

thank you for your reply. My geometry is 2D so it won't me allow to use the fill tool for the rectangles since it only allows me to select faces and not edges. I can't add frozen either. Do you know of any suggestions for a 2D geometry? Thank you so much!
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Old   September 8, 2022, 04:12
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Just sketch new rectangles to make new bodies.
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Old   September 8, 2022, 10:22
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So I've managed to set the smaller rectangles as solids in design modeler & the rest of the domain as fluid. However, for some reason in the Setup part, the rectangles are listed as fluids in the Cell zone conditions (see attached image). Also, it appears that the rectangular cells are meshed too when I generate mesh, and I don't get why cause they're supposed to be solids. The fluid flows around them, not through them. It could be because when I created a surface from edges (for the rectangular cells), the #edge joints generated seems to be in red (see attached image). It does still create the surface though, so I'm not completely sure if this is the issue.
Attached Images
File Type: jpg cellzones.jpg (10.3 KB, 4 views)
File Type: jpg DM_solidfluid.jpg (31.8 KB, 5 views)
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