I want to compute area-weighted-average of a simple function in fluent which contains if command in it. This is the explanation of my desired function:
f=1 ;if Wall shear stress0.5
Does anyone know that how can i define this function via UDF functions or other commands in fluent?
I'm not sure if you mean something like this, but maybe you need this part in your UDF:
DEFINE_ON_DEMAND(store_fname)
{
Domain *domain;
Thread *t;
cell_t c;
real fname;
domain=Get_Domain(1);
thread_loop_c (t,domain)
{
begin_c_loop (c,t)
{
if (C_UDMI(c,t,0) < 0.5);
fname = 1.;
else
fname = 0.;
C_UDMI(c,t,1) = fname;
}
end_c_loop (c,t)
}
}
The wall shear stress can be computed by a udf like this:
FLUENT V6 - Computing wall shear stress using a User-Defined Function (eureka.im)
Florian Schittl
Hi Florian
Thanks for sending me your code, I really appreciate it.
You may want to use the new Fluent Expressions instead. Should be much easier to use. Available for versions newer then 2020.R1.
Regards,
Dr. Th. Frank.
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