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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: gfoam

Forum: FLUENT October 11, 2012, 11:52

Replies: 16 Divergence detected in AMG solver Views: 10,190 Posted By gfoam One thing you can do is run the case until it... One thing you can do is run the case until it diverges, then stops it and make contours of velocity and p and look for zones where exits singularities. Then you can try to refine the mesh on that...

Forum: FLUENT October 11, 2012, 11:36

Replies: 16 Divergence detected in AMG solver Views: 10,190 Posted By gfoam I don't think so, one more thing: what is the... I don't think so, one more thing: what is the turbulence level and the lenght scale you're using at the inlet?

Forum: FLUENT October 11, 2012, 11:26

Replies: 16 Divergence detected in AMG solver Views: 10,190 Posted By gfoam Hi: mmmmm, 4000rpm is a lot for me. What's the... Hi: mmmmm, 4000rpm is a lot for me. What's the external radius of your compressor? With it you can calculate the velocity at the tip of the blades and vectorially adding the inlet velocity you can...

Forum: FLUENT October 2, 2012, 14:43

Replies: 16 Divergence detected in AMG solver Views: 10,190 Posted By gfoam Hi, did you try raising the timescale factor?... Hi, did you try raising the timescale factor? Because doing that you can filter some structures in the fluid flow that aren't inestationary. Another thing you ca try is using lower URF's. Regarding...

Forum: FLUENT September 20, 2012, 08:14

Replies: 16 Divergence detected in AMG solver Views: 10,190 Posted By gfoam OK, try to use a Coupled solver with the... OK, try to use a Coupled solver with the pseudo-transient algorithm and play with the timescale (rise it) if you have problems with convergence. Be carefull with it because it requieres more memory...

Forum: FLUENT September 20, 2012, 07:26

Replies: 16 Divergence detected in AMG solver Views: 10,190 Posted By gfoam Hi: First of all: which solver are you... Hi: First of all: which solver are you using? Segregated or Coupled? Which numerical schemes? First Order or higher order? What kind of initialization did you do? If you are usin second order or...

Showing results 1 to 6 of 6

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