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When to use double precision?

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Old   December 11, 2008, 15:09
Default When to use double precision?
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Paul
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When is it beneficial to use the double precision solver for fluent? I can't seem to find a real answer to this anywhere.

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Old   December 11, 2008, 15:25
Default Re: When to use double precision?
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Denis
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The use of double precision in Fluent is basically the same than for any other numerical code. It is needed everytime you need to capture a small variation of a quantity that can vary by large amounts. For instance if you have a very stretched mesh, with some cells dimensions beeing way higher than others, double precision will be helpful.
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Old   December 11, 2008, 16:15
Default Re: When to use double precision?
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Paul
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If I have models which are giving me many incompletes on the DPM, would double precision help eliminate them?
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Old   December 11, 2008, 17:57
Default Re: When to use double precision?
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Denis
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Most likely not, incomplete in DPM means that you are not having enough integration steps on your particles, or that the step are too small.

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