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[½»Á÷] fluent UDF DEFINE_SOURCE ÎÊÌâ

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ÎÒÏÖÔÚµÄÑо¿¿ÎÌâÊÇһģÄâµç×è¼ÓÈȯµÄÉýιý³Ì£¬¼ÓÈÈÔª¼þÊǵç¼ÓÈȰô£¬ÏÖÔÚÒѾ­´ò¿ª·øÉäÄ£ÐÍ£¬ÔÚ¼ÓÈȰôµÄ¼ÓÈȹ¦ÂÊËæÂ¯×ÓÀïµÄÈȵçżÎ¶ȵı仯¶ø±ä»¯¡£ÏÖÔÚÔÚ¼ÓÈȰôµÄ¹ÌÌåÇøÓòÉèÖÃÄÜÁ¿Ô´Ïî¡£µ«ÏÖÔÚÓöµ½µÄÎÊÌâÊÇDEFINE_SOURCE(name,c,t,ds,eqn)¶¨ÒåÖÐµÄ S¦µ=A+B¦µ,dS[eqn]=dS/d¦µ,Õâ¸ö×Ô±äÁ¿¦µ¿É²»¿ÉÒÔÊÇÁíÒ»¼ÆËãÓòµÄ±äÁ¿£¬¼´ÄÜÁ¿Ô´ÏîÖеÄÌå»ýÈÈÁ÷ÃܶÈÊÇÁíÒ»¸ö¼ÆËãÓòÖÐijµãζȵĺ¯Êý£¨·´À¡µ÷½Ú£©£¬Èç¹ûÌå»ýÈÈÁ÷ÃܶÈÊǸüÆËãÓòÖÐζȵĺ¯ÊýµÄ»°£¬udf ±È½ÏºÃд£¬µ«ÊÇÈç¹ûÊÇÁíÒ»¸ö¼ÆËãÓòijһµãζȵĺ¯ÊýµÄ»°²»Öª¿É²»¿ÉÒÔʵÏÖ£¿
ÏÖÔÚ¿ÎÌ⿨ÔÚÕâÁË£¬Çó¸÷λ´óÉñ²»Áߴͽ̣¡
#include"udf.h"
DEFINE_SOURCE(energy_source,c,t,dS,eqn)
{
  Domain *domain=Get_Domain(37);//»ñµÃ¯×ÓÖÐ¼à¿ØÎ»ÖÃdormainµÄIDÖµ¡£
  real temp_ave;               
  real temp_sum=0;              
  int  count=0;
  cell_t c1;
  Thread *thread_thermocouple;  
  real source;

//ÏÂÃæÕâ¸öÑ­»·ÊÇΪÁ˵õ½¼à¿ØÇøÓòµÄcellµÄƽ¾ùζÈ
thread_loop_c(thread_thermocouple,domain)
{
  begin_c_loop(c1,thread_thermocouple)
    {
      ++count;
      temp_sum+=C_T_M1(c1,thread_thermocouple);
     }
  end_c_loop(c1,thread_thermocouple)
}
  temp_ave=temp_sum/count;//¼à¿ØÎ»ÖÃµÄÆ½¾ùζÈ

//Èç¹ûÎÂ¶È¼à¿ØÎ»ÖÃµÄÆ½¾ùζÈСÓÚ973K£¬ÔòÌå»ýÈÈÁ÷ÃܶÈΪ3.468*10^7
if(temp_ave<973)
{
   source=3.468*pow(10,7);
   dS[eqn]=0;
  }
/*Èç¹ûÎÂ¶È¼à¿ØÎ»ÖÃµÄÆ½¾ùζȴóÓÚ973KСÓÚ1023K£¬ÔòÌå»ýÈÈÁ÷ÃܶÈΪ-884.56*temp_ave+904904.88 */
  else if(temp_ave<1023)
{
   source=-884.56*temp_ave+904904.88;
   dS[eqn]=-884.56;
  }
//Èç¹ûÎÂ¶È¼à¿ØÎ»ÖÃµÄÆ½¾ùζȴóÓÚ1023K£¬ÔòÌå»ýÈÈÁ÷ÃܶÈΪ
  else
  {
    source=0;
    dS[eqn]=0;
   }
  return source;
}
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