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difference between PATCH and INITIAL

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Old   September 17, 2003, 13:55
Default difference between PATCH and INITIAL
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zwdi
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Hello everyone, I am not clear about the Patch and Initial usage under Unsteady condition. For t=0s, which value is used for calculation, Patch or Initial? Thanks. Zwdi
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Old   September 17, 2003, 15:21
Default Re: difference between PATCH and INITIAL
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ap
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Initialize command works on the whole domain, while Patch allows you to select portions of it and to specify values (or profiles) of a particular variable.

If you initialize, then patch a variable, at t=0 FLUENT uses the patched value, because it overwrites the first one.

Hi

ap
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Old   September 17, 2003, 15:46
Default Re: difference between PATCH and INITIAL
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zwdi
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Thank you very much. Have a good day! Zwdi
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