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Time/memory requirement CFD

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Old   August 30, 2007, 16:10
Default Time/memory requirement CFD
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New
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How can one find how time/memory a CFD job will take before submitting the job?
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Old   September 5, 2007, 08:41
Default Re: Time/memory requirement CFD
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Newton
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It really depends on the cfd package u r using... But, for memory, the equivalence 1 element/volume for 1 MB is acceptable... for time consuming, it depends also on the machine u r using...

Rgds...
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Old   September 5, 2007, 12:49
Default Re: Time/memory requirement CFD
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Alex
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0.5 - 1Gb RAM per million cells for mesh building.
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Old   September 5, 2007, 16:03
Default Re: Time/memory requirement CFD
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Bert
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1Mb per control volume is very very high ! Even for unstructured implicit codes. Expect something like 0.5-1 Gb per million grid points with a structured solver. Don't know the exact figure for unstructured solver.
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Old   September 6, 2007, 06:12
Default Re: Time/memory requirement CFD
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Newton
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As I said, it really depends on the cfd package... and the simulation u r going to do... U see, here Im devloping a code that couples lots of things from FSI to reaction... And it got a little bit bigger than I was expecting... Well, the important thing is that cfd softwares are both memory and time consuming...
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