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Error: Divergence detected in AMG solver: x-momentum/ epsilon/ temperature

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Old   February 21, 2013, 03:04
Smile Error: Divergence detected in AMG solver: x-momentum/ epsilon/ temperature
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Elaine Wee
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When i run a turbine combustion chamber simulation, I encounter these divergence errors

1. Error: Divergence detected in AMG solver: x - momentum
2. Error: Divergence detected in AMG solver: Epsilon
3. Error: Divergence detected in AMG solver: temperature

Can anyone explain why did I get these errors and how to I solve in order for the calculation to continue running.

Thanks in advance.
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Old   February 23, 2013, 04:19
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The mesh may not be correct.
Or you have set fluent settings incorrectly.
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Old   February 24, 2013, 21:30
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Elaine Wee
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Dear Saeed Sadeghi,

I see. Thank you for the reply.

1. what are the possible fluent setting that can affect these errors?

2. How do I correct the mesh? Im new in these, so far I only know how to auto mesh the combustion chamber. do I have to specially mesh the respective boundary?

Warm regards,
Elaine
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Old   February 25, 2013, 01:07
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I think the problem much more that the fine mesh.
- You may have not setted correct boundary condition.
- You may have not made the geometry correctly.
It should be investigated to find and fix the problem.
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Old   February 26, 2013, 02:09
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Elaine Wee
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I have been reading your site on the meshing part but not sure how to do. Would it be possible if I show you my work and you give me some advice? I try to attached my file but is 30 kb larger. Do you have msn or email which I can show you?
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Old   February 26, 2013, 02:12
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You can find the email from my website.
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Old   February 26, 2013, 04:30
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Elaine Wee
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I tried to send to the email in the website ( saeed@me.iut.ac.ir) , but it could not get through. Is saeed@me.iut.ac.ir the email address?

Regards,
Elaine
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