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Forum: FLUENT

October 24, 2014, 02:37

Replies: 5

Significant change in results with changing either mesh size or time step size.

Views: 1,726

Posted By CeesH

What did you base the timestep size on? It seems...

What did you base the timestep size on? It seems like it may be too high, causing the problems. A converging solution doesn't mean a mesh independent solution of course, so maybe you simply need to...

Forum: FLUENT

October 21, 2014, 03:17

Replies: 5

Significant change in results with changing either mesh size or time step size.

Views: 1,726

Posted By CeesH

Hi, Some questions: Is the case 2 or 3-D? ...

Hi,

Some questions: Is the case 2 or 3-D?

Do your residuals converge (and do other monitors you may be using converge) during a simulation?

If you plot your results versus mesh density or...

Forum: FLUENT

October 21, 2014, 02:01

Replies: 5

Significant change in results with changing either mesh size or time step size.

Views: 1,726

Posted By CeesH

My suggestion: decrease your mesh and timestep...

My suggestion: decrease your mesh and timestep size to a size where they do not significantly influence the solution. Clearly, your results are not grid/stepsize independent. What else do you think...

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