Friction Stir Welding UDF in Fluent 2020 R2( Fluent is Automatically closed)?

17 July 2022 0 3K Report

Dear altruists,

I am trying to simulate a transient fluent model with a wall heat source. When I had a udf for heat source, the solution becomes divergent, but when I put constant value, the simulation works. Is there any recommended solution?

#include "udf.h"

DEFINE_PROFILE(Frictional_heat_flux,thread, index)

{

real x[ND_ND];

real mue=0.3;

real omegaV;

real temp;

real sticking=0.65;

real theta;

real R;

real pressure=40e06;

real yieldstress;

real cf=0.95;

real U=0.004656;

real omega=32.5;

face_t f;

begin_f_loop(f, thread)

{

F_CENTROID(x,f, thread);

temp=F_T(f, thread);

if (temp

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