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Messages - chenxizh

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Fluent / a problem about user define scalars(uds)
« on: June 06, 2012, 10:46:18 AM »
Hi, all. Recently I want to use Fluent's user define scalars(uds) in a multiphase problem . I find that the uds in multiphase has the following formulation

So I have a problem about the diffusion term. When I input the value "uds diffsivity" In "Create /Edit Material "  should I multiply by the density and the voidage myself ? Or Fluent will auto multiply the voidage of the phase?
Can anybody help me? thanks.

Hi, I think It will be more convience to use "Define-Adjust" to record the data and then save to the udm or uds?
See below:,1074.0.html

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