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Forum: Main CFD Forum

March 26, 2013, 11:19

Replies: 17

Mesh Independent Study

Views: 8,409

Posted By flotus1

Judging convergence solely on the global...

Judging convergence solely on the global residuals for the equations solved is dangerous.

Since it is the drag coefficient you are interested in, you should monitor this value. At some point, it...

Forum: Main CFD Forum

March 26, 2013, 08:41

Replies: 17

Mesh Independent Study

Views: 8,409

Posted By flotus1

Since we know now that you are using...

Since we know now that you are using Fluent...:rolleyes:
go to the "Monitors" tab and edit the Residuals.
Untick the "check convergence" boxes for every equation.
Now your simulation will run the...

Forum: Main CFD Forum

March 26, 2013, 07:20

Replies: 17

Mesh Independent Study

Views: 8,409

Posted By flotus1

With only 200 Iterations, it is highly probable...

With only 200 Iterations, it is highly probable that the solution is not converged. At least not to a point where it makes sense to compare results on different meshes.
You should definitely monitor...

Forum: Main CFD Forum

March 26, 2013, 06:17

Replies: 17

Mesh Independent Study

Views: 8,409

Posted By flotus1

I think what FM Denaro was trying to say is that...

I think what FM Denaro was trying to say is that the RANS-equations themselves are only an approximation.
So there is no need to reduce the truncation error to 0.01% with an abundance of...

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