UDF mixture fraction gradient
 

Hello, everyone!

I am writing an UDF to calculated the turbulent Schmidt number based on flow variables and thus not use a constant one for my simulation. But the problem which I am experiencing is that I need the mixture/mass fraction gradient for the last step of my calculations.

Is there a way in which I can access this values or calculate them? I tried using the cell macro C_YI_G(c,t), but it is aplicable only for density-based solvers and mine is pressure-based.

Thanks in advance!