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modelling heat flux in udf

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Old   November 24, 2010, 06:10
Default modelling heat flux in udf
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Rafał Kryjak
Join Date: Jul 2010
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I have problem with defining moving heat flux in udf. Heat flux is limited by circle and rest of the face transfering heat by convection.

I tried many times to modify this code but I even wasn't able to have stable heat flux circle on a face with desired parameters.

Mesh geometry is a cube.

I'll be really gratefull to anyone who help me with this code.

Code:
#include "udf.h"

DEFINE_PROFILE(laser,thread,i)

{
  real q = 1000;
  real t = CURRENT_TIME;
  real x[ND_ND]; 
  real qO;
  real xO = 5;
  real xOt;
  real z = 0;     
  real v = 0.003;
  real r = 0.001; 
  real alfa = 20;
  real TO = 290; 
  real Tp = 280; 
  face_t f;
  
  xOt = xO + v*t; 
  qO = alfa*(TO-Tp);  


 
  

      begin_f_loop(f,thread)
{
  
       F_CENTROID(x,f,thread);
        
       if ( ((x[0]-xOt)*(x[0]-xOt) + (x[1]-z)*(x[1]-z) ) <= r*r )
    
       F_PROFILE(f,thread,i) = q;

       else  

       F_PROFILE(f,thread,i) = qO;
}
       end_f_loop(f,thread)

}
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