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Grid dependence check

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Old   July 28, 2003, 05:10
Default Grid dependence check
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Julie Polyakh
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What difference between results obtained with different meshes is acceptable to say that no additional refinement is needed?
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Old   July 28, 2003, 14:02
Default Re: Grid dependence check
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allan
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I would say 5%, but it can depend on a lot of issues!!

Have you got the Ercoftac domumentation yet? It gives guidelines to a lot of these basic questions you're asking

allan
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Old   July 28, 2003, 14:23
Default Re: Grid dependence check
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Julie Polyakh
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Hi Allan,

No, don't have the Ercoftac documentation. How can I get it?

Thanks for your response,

Julie
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Old   July 28, 2003, 15:35
Default Re: Grid dependence check
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4xF
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Have you ever heard of Richardson extrapolation? This gives you as well a mean to check for the mesh independent solution. See also Ferziger & Peric, Computational Methods for Fluid Dynamics, Springer, 2001
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Old   July 29, 2003, 04:24
Default Re: Grid dependence check
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Julie Polyakh
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How exactly do I perform the check for independent solution using Richardson extrapolation (for example, applying the material given here: http://www.math.ubc.ca/~burggraf/math256/richardson.pdf)?
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Old   July 29, 2003, 05:26
Default Re: Grid dependence check
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allan
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go to their website:

http://www.ercoftac.org

click on the link ercoftac publications then best practice guidelines

allan
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