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Forum: FLUENT

August 16, 2014, 11:18

Replies: 30

what is under relaxation factor?

Views: 148,959

Posted By amin.z

As I said, in most cases bigger values and...

As I said, in most cases bigger values and closest to defult are more reliable than small values!

Forum: FLUENT

August 16, 2014, 11:06

Replies: 30

what is under relaxation factor?

Views: 148,959

Posted By amin.z

Dear ramesh! Usually flows must converge with...

Dear ramesh!
Usually flows must converge with URFs close to defult,but when the solution isn't stable and diverge we can control the solution with reducing URFs! So when solution converge, it's...

Forum: FLUENT

August 16, 2014, 06:09

Replies: 30

what is under relaxation factor?

Views: 148,959

Posted By amin.z

In my idea, it's better that use density based...

In my idea, it's better that use density based for yor problem
But if you want to use pressure based solver, I think it's better that your problem converges with more URFs and 2nd order for less...

Forum: FLUENT

August 15, 2014, 16:06

Replies: 30

what is under relaxation factor?

Views: 148,959

Posted By amin.z

Urf for nozzle!? I think flows in nozzles...

Urf for nozzle!?
I think flows in nozzles should model with density based solver!
In density based solver there isn't URF,instead you can reduce the courant number to controlling convergence!

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