[alinik]

Hi,

I am trying to write a UDF for k omega turbulence model. This is the mathematical description of the model:



I am having trouble writing a source term for the first term on RHS of the equation:

I do not know how to add dU_i/dx_j to the source term. For two dimensional flow it reduces to strain rate for which I can use Strainrate_Mag in my UDF but I do not know what to use for a more general flow condition.

Any kind of help is much appreciated.

Thanks,