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UDF Initialize temperature in solid objects

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Old   February 22, 2019, 04:20
Default UDF Initialize temperature in solid objects
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SÚrgio Cavaleiro Costa
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Hi all,
In the Workbench I have created a fluid domain and 5 solid domains independently and merged all to a fluent. All solids are immersed in the fluid and linked using the mesh interface. Inside solids, I only want to solve heat conduction. I would like to initialize them with different temperatures without using the patch way. My code so far is the following:

Code:
#include "udf.h"

DEFINE_INIT(initMaterial, domain)
{
  cell_t c;
  Thread *t1 = Lookup_Thread(domain, 77);
  Thread *t2 = Lookup_Thread(domain, 74);
  Thread *t3 = Lookup_Thread(domain, 71);
  Thread *t4 = Lookup_Thread(domain, 68);
  Thread *t5 = Lookup_Thread(domain, 65);
   
  /*----------------body 1 -----------------*/
  thread_loop_c (t, domain)
  {
	  /* loop over all cells  */
	  begin_c_loop (c, t)
        {
		  C_T(c, t) = 500.;
        }
      end_c_loop (c, t)
   }
  
  /*----------------body 2 -----------------*/
    thread_loop_c (t2, domain)
	{
      begin_c_loop (c, t2)
        {
		  C_T(c, t2) = 600.;
        }
      end_c_loop (c, t2)
    }

	/*----------------body 3 -----------------*/
  thread_loop_c (t3, domain)
    {
      begin_c_loop (c, t3)
        {
		  C_T(c, t3) = 700.;
        }
      end_c_loop (c, t3)
    }
	
  /*----------------body 4 ----------------- */
  thread_loop_c (t4, domain)
    {
      begin_c_loop (c, t4)
        {
		  C_T(c, t4) = 800.;
        }
      end_c_loop (c, t4)
    }
	
	/*----------------body 5 -----------------*/
  
  thread_loop_c (t5, domain)
    {
      begin_c_loop (c, t5)
        {
		  C_T(c, t5) = 900.;
        }
      end_c_loop (c, t5)
    }
	
}
I have hooked the UDF in initialization, I manage to compile and initialize without any issues but when I check temperatures with isolines they don't match with the ones I want.

Can anyone help me? I have been searching for something similar but everything in my code looks logical and can't figure out I is it being ignored.
Thank you all for your help.
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fluid, initialisation, solid, temperature, udf

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