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Under relaxed values

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Old   July 25, 2004, 23:28
Default Under relaxed values
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Hello,

Aside from simulation-time can "extreme" under-relaxation have an impact on the accuracy of the solution?

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Old   July 26, 2004, 08:38
Default Re: Under relaxed values
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Yes, an extreme under-relaxation has an effect on the solution. If you under-relax too much, you risk to have false convergence, which brings to "false" solutions.

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Old   July 26, 2004, 20:33
Default Re: Under relaxed values
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Ok thx.

If you have the time, could you plz recommend any paper och text book that covers false convergence?

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Old   July 27, 2004, 05:17
Default Re: Under relaxed values
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Sorry, I don't know a paper which talk about the problem of "false convergence". It has been presented to me during a course I attended to.

However, a book which covers under-relaxation techniques should be of help.

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