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July 20, 2022, 07:32 |
Convergence problem
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#1 |
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黃聖淵
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I want to simulation fume hood leakage problem and using k model.
boundary condition inlet pressure inlet= 0 p sup1,2 velocity inlet= 1.37 m/s outlet mass flow outlet= 0.516 kg/s but it can't convergence. and show this message Reversed flow on 247 faces (2.6% area) of pressure-inlet plese help me |
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July 20, 2022, 09:56 |
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#2 | |
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Void_CFD-user
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July 20, 2022, 11:40 |
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#3 |
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黃聖淵
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July 20, 2022, 11:43 |
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#4 |
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Void_CFD-user
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Right, we'll reversed flow shouldn't be the cause for no convergence. Can you show me your solution methods? Try changing to coupled and using pseudo time step method. Also not sure how good your mesh is, but try switching to k-w sst. If you want to use k-e model, use Realisable k-e with enhanced wall treatement.
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July 20, 2022, 22:38 |
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#5 | |
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黃聖淵
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Quote:
what is pseudo time step I trying to add pseudo time step but the continuity still in 1e+00 I used your suggest is this correct? my english is not good sorry thank you for answering my question |
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July 21, 2022, 04:14 |
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#6 | |
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Void_CFD-user
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Quote:
If it still doesn't converge try reducing pseudo time step from 1. |
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August 24, 2022, 05:17 |
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#7 | |
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黃聖淵
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convergence in fluent, fume hood |
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