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where is the under-ralexation-factor in CFX?

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Old   June 8, 2006, 23:13
Default where is the under-ralexation-factor in CFX?
  #1
prayskyer
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IN fluent,there is a under-ralexation-factor,like some expert para,but where can i find the factor in CFX?
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Old   June 9, 2006, 09:05
Default Re: where is the under-ralexation-factor in CFX?
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Fred
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The same. Under Expert parameters. Take a look in the online manual.
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Old   June 9, 2006, 09:20
Default Re: where is the under-ralexation-factor in CFX?
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Robin
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CFX does not use under-relaxation parameters like Fluent or other segregated solvers do. The timestep provides the necessary relaxation in a physical manner by increasing or decreasing the influence of the transient term.

See the help on monitoring and improving convergence for more information.

-Robin
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Old   June 9, 2006, 09:36
Default Re: where is the under-ralexation-factor in CFX?
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prayskyer
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IN CFX,i think the expert parameter means that under-relaxt-factor,before u told me! If so,the expert parameter seems more powerful than that under-relaxt-factor,i must learn them more,

thanks a lot!
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Old   June 9, 2006, 10:16
Default Re: where is the under-ralexation-factor in CFX?
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Dr. Bian
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Are u sure of this? It seems the Relaxation Parameters under Expert Parameters are those typical parameters. I never paid attention on these, thought timestep is the only thing. But now, I know more.
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Old   June 9, 2006, 13:18
Default Re: where is the under-ralexation-factor in CFX?
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Robin
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The necessity to change these is different because the solvers is completely different. Unless you are specifically directed to change one of these parameters by support, leave them alone.

-Robin
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