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March 16, 2012, 02:02 |
CFX residual bouncing
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#1 |
New Member
wind
Join Date: Feb 2012
Posts: 16
Rep Power: 14 |
Hi, i'm doing the simulation of the spray with water mist. Initally i'm using mass flow rate of 2g/s of injected water mist, the solver is steady and converge, When i increase the mass flow rate of the injected water mist to 200g/s, I'm facing the convergence issue and the residual is bouncing as shown in the attachment. May i know how can i resolve this issue? Any one can help me? Thanks.
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March 16, 2012, 02:32 |
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#2 |
Member
h-h
Join Date: Sep 2009
Posts: 38
Rep Power: 16 |
i think with decreasing time scale.
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March 16, 2012, 03:36 |
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#3 |
New Member
wind
Join Date: Feb 2012
Posts: 16
Rep Power: 14 |
Hi, thanks for your reply. Currently, i'm using auto time scale, should i change to physical time scale, and use small time step?
Thanks. |
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March 16, 2012, 04:27 |
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#4 | |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
Quote:
Try reading this FAQ: http://www.cfd-online.com/Wiki/Ansys...gence_criteria |
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March 16, 2012, 04:49 |
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#5 |
New Member
wind
Join Date: Feb 2012
Posts: 16
Rep Power: 14 |
Hi, Thanks for your reply ghorrocks. now i trying with larger physical time, see whether it work or not..
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