I want to change the viscous and inertial resistance coefficients in a porous zone (Cell Zone) as function of time using an UDF.
In the manuel, I found this UDF to define a viscous resistance profile in a porous zone.
I want to define the coefficients in each direction and as function of time. How can I define this parameters in the UDF?
Have anyone any UDF-Code to change the coefficients as function of time?