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-   -   Divergence detected in AMG solver: ads-0 (http://www.cfd-online.com/Forums/fluent/91882-divergence-detected-amg-solver-ads-0-a.html)

Patrino August 25, 2011 08:04

Divergence detected in AMG solver: ads-0
 
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
.
.
.
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Divergence detected in AMG solver: ads-0
Error: floating point exception
Error Object: #f

would be glad if anyone could help me

br

stuart23 August 25, 2011 20:48

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

Patrino August 26, 2011 08:28

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.

shahid nadeem April 9, 2014 10:40

Hello Dear FRiends can you tell me what does level means

jakeme April 18, 2014 01:53

how‘s going that error? hey,brother,i need your help


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