How to write UDF for Dynamic Viscosity
 

Dear All

I need your comments and suggestions for the given equation. Please find the attached file herewith.

Thank you

Ramakant

How to write UDF for Dynamic Viscosity
 

You can find an example in UDF manual, following should work.

DEFINE_PROPERTY(visc_T, c, Tp) {
real mu; real a = C_T(c,t);
mu = 2.414e-05 * pow(10, 247.8/(Tp - 140));
return mu;
}

The linkhttp://cfdyna.com/CFDHT/scriptsMacros.html#UDF might help you understand how UDFs are written.

Thank you very much...

hello everyone. i have to create udf for dynamic viscosity and thermal conductivity coefficient. but have no idea about codes.

here is the formulas. if anyone can help me, i wii be glad.



mu=(3.4*10^-7*T^2)-(2.3*10^-4*T)+(3.9*10^-2)

k=0.004961*T-0.8078