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Old   March 13, 2008, 13:48
Default oscillating RMS ?
  #1
amine
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Hi,

if the RMS values on the solver oscillate (hold around a value),what could be the cause ;poor mesh quality or simply a large timestep ,or both ?

thanks
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Old   March 13, 2008, 14:03
Default Re: oscillating RMS ?
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andy2O
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Please see the following link in this forum's FAQ for advice:

http://www.cfd-online.com/Wiki/Ansys...gence_criteria

Good luck. Andy
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Old   March 14, 2008, 15:45
Default Re: oscillating RMS ?
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Craig Hildreth
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I had a similar problem although it was with energy balances. Refining the mesh and using double precision made a huge difference.
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