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UDS difiiusity

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Old   April 4, 2023, 18:50
Default UDS difiiusity
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Hi all, In the ANSYS FLUENT, the units for diffusivity are kg/(ms) while the conventional units for diffusivity (m^2/s). so it means that Fluent is solving *

I have to solve this equation dC/dt= D div(div C)+ s . If*I multiply all the parameters with rho the current equation will be:
d(rho*C)/dt= D div(div roh*C )+ s*rho. I was wondering if it is the correct way to change my equation to the fluent format.

thanks in advance for your help.

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udf code, uds

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