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April 11, 2013, 09:09 |
Grid sensitivity question
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#1 |
Senior Member
Mr CFD
Join Date: Jun 2012
Location: Britain
Posts: 361
Rep Power: 14 |
Hello,
I'm doing a grid sensitivity study. Hypothetically let's say I have three meshes: - Mesh 1 - Mesh 2 - Mesh 3 Each mesh is different. I have a transient solution for mesh 1, but not for mesh 2 or 3. Is it acceptable to use the results from mesh 1 as the initial guess for mesh 2? Likewise is it acceptable to use the results from mesh 2 as the initial guess for mesh 3? The alternative method is to (for all three meshes): - Compute a solution using steady state - Using the steady state solution as the initial guess compute the transient solution I hope that makes sense! |
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April 11, 2013, 09:59 |
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#2 |
Senior Member
Lance
Join Date: Mar 2009
Posts: 669
Rep Power: 22 |
An initial guess is just a guess, so as long as your simulation converges you should be fine with using the coarser mesh as initial guess on the finer meshes.
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April 11, 2013, 10:15 |
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#3 |
Senior Member
Mr CFD
Join Date: Jun 2012
Location: Britain
Posts: 361
Rep Power: 14 |
Ta muchly.
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