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Old   February 10, 2003, 04:47
Default Different answers
  #1
heydari
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Hi, As I wanted to solve a jet flow, by different value initializing I get different answers, do you know why?
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Old   February 12, 2003, 02:10
Default Re: Different answers
  #2
Keil
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Hi,

This is my guess, the calculation is not convergence yet. If you judge only the residuals, the residuals are not good to judge whether a calculation is convergence or not. So you should monitor some values at some points and when the values become constant value during iterations,then we can say the calculation is convergence.

Regards,

Keil
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Old   February 15, 2003, 02:31
Default Re: Different answers
  #3
heydari
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Thanks for your reply KEIL, you mentioned the monitoring, What kind of value (x-vel, y-vel, z-vel, pressure, k, e, ...) do you mean? In an unsteady solution, how can this be used?
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Old   February 20, 2003, 08:10
Default Re: Different answers
  #4
Keil
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Hi,

I mean, the monitoring is a certain physical value at an arbitrary location in your calculation domain.

How about the following procedure?.

First, you define the location and physical value(for example, velocity magnitude or something). Second ,Define the property(monitoring at every iterations or time steps) on the panel Solve-Monitors-Surfaces. And then calculate it.

I recommend every iterations monitoring because we are able to check whether the calculation is convergence or not in the time.

Regards,

Keil
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Old   February 25, 2003, 05:04
Default Re: Different answers
  #5
heydari
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thanks for your help,
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