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August 25, 2011, 09:04
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Divergence detected in AMG solver: ads-0
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#1 |
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New Member
Join Date: Nov 2010
Posts: 4
Rep Power: 17  |
hello,
i try to simluate a normal supersonic nozzle. everything worked fine before i wanted to improve my y+ value. therefore i increased the mesh size near the wall. if i run it now with the same values, i always get the error Divergence detected in AMG solver: ads-0 Divergence detected in AMG solver: ads-1 . . . . Divergence detected in AMG solver: ads-0 Error: floating point exception Error Object: #f would be glad if anyone could help me br |
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August 25, 2011, 21:48
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#2 |
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Senior Member
Stuart Buckingham
Join Date: May 2010
Location: United Kingdom
Posts: 267
Rep Power: 27 |
Hi
Are you using the density based solver? Implicit or Explicit? What AMG cycles are you running? V, W, F or flexi? Also did you increase the number of levels when you went up a mesh size? Stu |
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August 26, 2011, 09:28
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#3 |
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New Member
Join Date: Nov 2010
Posts: 4
Rep Power: 17 |
Hello,
I'm using density based solver implicit. Also using standard V cycles and I didn't improve the levels when i increased the mesh size. I only increased the mesh size near the wall so I get a lower y+ value. |
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April 9, 2014, 11:40
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#4 |
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Member
Nazim
Join Date: Oct 2013
Posts: 93
Rep Power: 14 |
Hello Dear FRiends can you tell me what does level means
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April 18, 2014, 02:53
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#5 |
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New Member
jake sawn
Join Date: Apr 2014
Posts: 1
Rep Power: 0 |
how‘s going that error？ hey，brother，i need your help
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November 25, 2015, 10:04
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#6 |
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New Member
GAUTAM
Join Date: Nov 2015
Posts: 2
Rep Power: 0 |
hey, i am facing the same problem. have u got the solution with uniform mesh size. before refining mesh near wall. and one more thing it is a problem with axi-symmetric case only. it work fine for planner case.
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May 12, 2022, 04:11
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#7 |
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New Member
Maharashtra
Join Date: Aug 2020
Posts: 4
Rep Power: 7 |
How to check AMG cycle type in fluent and how to change it?
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