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Old   March 12, 2009, 11:40
Default Max Residual Post Plot
  #1
Ed
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Hello,

I was wondering if there is a way to plot residual values in the post processor. I am able to get the highest maximum residual from the .out file, but being able to see the residuals would really help me to know where my problem areas are and if my model is acceptable.

If not, is there a way to find the 2nd highest max residual? It's conceivable to have 1 low residual at a really sharp corner, but I need to know if the next residual is above my convergence criteria, and if it's not, whether or not it is in an area of interest.

All my RMS values are sufficiently converged.

Thanks, Ed
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Old   March 12, 2009, 12:05
Default Re: Max Residual Post Plot
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Adam Stuchlik
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You can create isovolumes or isosurface and choose, e.g. "V Mom Domain.Residual" from the variable selector
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Old   March 12, 2009, 12:14
Default Re: Max Residual Post Plot
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Ed
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That's not something I see in the variable selector. Do I need to specify this variable to be outputted in the pre-processor?
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Old   March 12, 2009, 12:28
Default Re: Max Residual Post Plot
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Adam Stuchlik
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you have to toggle on that residuals are being monitored in pre under output control.
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Old   March 12, 2009, 21:14
Default Re: Max Residual Post Plot
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Rikio
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Ed,

In my opinion, residue is used to help to decide whether the model is converged. If the residue did not reach our expectation, we need to refine the mesh, modify BCs or something like that. I think you wanna find out the meshes of maximum residuals, and then check the meshes, right? Please let me know if you are in another way of thought.

Rikio
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Old   March 13, 2009, 09:41
Default Re: Max Residual Post Plot
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Ed
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I think if your max residuals are localized to a certain part of the model, and you determine they are far enough away from your area of interest (but not near an inlet or outlet), then you can ignore that part of the model and accept the rest of your results as accurate, as long as everywhere else has reached its max residual values.
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