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Divergence using pressure-based method in dynamic mesh case

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Old   December 31, 2013, 23:05
Default Divergence using pressure-based method in dynamic mesh case
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Jiweiqi
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Hi,
I am using dynamic mesh. But if i apply a pressure-based solver to it right now after initializing, it diverged. If i applied a coupled method and apply a pressure-based method, it converged again.
Is it OK to using Coupled at the beginning and pressure-based solver late.
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Old   January 1, 2014, 07:34
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Hi,
I think the dynamic meshing module is not dependent on the flow solver. The coupled solver converges quickly than the normal pressure simplec scheme in terms of iteration number, but it takes more computational resources for each iteration. Eventually you should get similar results with both the approaches.
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Old   January 1, 2014, 12:48
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Quote:
Originally Posted by taxalian View Post
Hi,
I think the dynamic meshing module is not dependent on the flow solver. The coupled solver converges quickly than the normal pressure simplec scheme in terms of iteration number, but it takes more computational resources for each iteration. Eventually you should get similar results with both the approaches.
Thanks, i use only layering dynamics mesh instead. I used both smoothing and layering before. Now, it can converged using PISO or other segregative solver.
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