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Old   December 2, 2015, 13:54
Default How to do Grid Independent Study
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Terry
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Hi all,

I was wondering how do I do a grid independent study. I have ploughed through the forum several times and I could not find the answer I need. I understand that grid independence can be achieved by refining the mesh progressively. But how do I do so?

Take ANSYS FLUENT for example. There are so many parameters(eg. max face size, edge sizing, etc....)that can be used to refine the mesh. Which is the correct parameter that I should adjust?

Thank you!!!
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Old   December 2, 2015, 14:02
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In addition, do I do refinement at the workbench or Fluent?
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Old   December 2, 2015, 20:27
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I think you should fix the first wall cell first then change the core mesh density to get a variable which doesn't change when solution converged.

Hope that helps
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Old   December 2, 2015, 21:06
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Quote:
Originally Posted by Jeeloong View Post
I think you should fix the first wall cell first then change the core mesh density to get a variable which doesn't change when solution converged.

Hope that helps
Hi Jeeloong,

Thank you for your reply! May I ask how do I do so? Where do I adjust the wall cell and where do I change to core mesh density?

P.S I forgot to mention that my domain is rectangular and 2D.
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Old   December 3, 2015, 07:05
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Do it in pre-solver (Meshing tool) by loading the mesh file in the software.

Then change the spacing size of the cells either transverse or longitudinal.

Thanks

Hope it helps
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