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[ANSYS Meshing] Expanding Mesh Size

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Old   July 15, 2015, 17:45
Default Expanding Mesh Size
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Hi all,

Say that I have a 2d simulation with just a rectangle. I'd like to have the mesh be very fine near the bottom of the rectangle, and become increasingly larger as we move in the positive y direction. How is this done in fluent? The only thing I've found so far is the inflation method, but that isn't doing quite what I want- I ultimately need a triangular mesh and inflation always seems to force it to be rectangular.

Any and all input is much appreciated. Thanks!

Last edited by Sphagnum; July 15, 2015 at 17:51. Reason: typo
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Old   July 15, 2015, 19:17
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Maybe trias with bias meshing, read the tutorials on this available on Ansys customer portal. i am sure i have read about doing this before.
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Old   July 15, 2015, 19:57
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Hi sphagnum,

As hwet suggested, giving Bias factor on vertical edges will make sure you have fine mesh at start and coarse mesh at top depending on which Bias type you choose.

I am not sure about fluent but in
"Ansys Meshing>Use Advance Size Function> On proximity and Curvature" helps in achieving the same result with Given growth rate(depends on your size of your geometry)

Cheers
KAPI
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Old   July 15, 2015, 21:29
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Ahhh yes, I thought there was something I was forgetting from the tutorials I had done. Thank you very much for the help.
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Old   July 16, 2015, 16:42
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Hi all,
So I've been adding an edge sizing with bias factor, but that only expands the mesh close to the edge. Is there a way to change this so that it applies to the entirety of the rectangle?

Thanks again!
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Old   July 16, 2015, 20:11
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Give a higher "Bias Factor" and it will cover your whole geometry!
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