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#include "udf.h"
#define K 0.274
DEFINE_SOURCE(face_source, cell, face, thread, yk, dS, eqn)
{
real source;
fluid_ID = 13;
Domain *domain;
?Thread *t = Lookup_Thread(domain,fluid_ID);
?Thread *t0 = THREAD_T0(t);
cell_t c0 = F_C0(f,tf);
tc0 = THREAD_T0(tf);
source=yk*exp(-Kt)
dS[eqn]=-K*yk
return source
}

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1 DEFINE_SOURCE (name, c, t, dS, eqn) Õâ¸öºê£¬ÄãÔõôÔÚÕâ¸öÀ¨ºÅÀïÃæËæ±ã¼ÌÐø¼Ó±äÁ¿£¿Õâ¸ö±äÁ¿ÊDz»ÄܱäµÄ¡£
2 °üÀ¨cell ÒÔ¼°thread£¬Í¨¹ýÕâ¸öºêfluentÒѾ­×Ô¶¯¸øÄã´«½øÀ´ÁË£¬Ä㻹Thread *t = Lookup_Thread(domain,fluid_ID);
Thread *t0 = THREAD_T0(t);  cell_t c0 = F_C0(f,tf); tc0 = THREAD_T0(tf)£¬¶¼ÊǶàÓàµÄ¡£ÄãÖ»ÐèÒªÖ¸¶¨Ã¿¸öcellÀïÃæµÄÏûºÄËÙÂÊÖµ¼´¿É£¬ÖÃÓÚÊÇÔÚÄĸöcell Äĸöthread£¬Õâ¸öºêÒѾ­¸øÄã´«½øÀ´ÁË£¬Äã²»ÓùÜÁË¡£
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#include "udf.h"
DEFINE_SOURCE (kc_source, c, t, dS, eqn)
{
real source;
real yk,k
yk=ÿ¸öcellµÄ×é·ÖÖÊÁ¿°Ù·Ö±Èºêº¯Êý£¬ÄãÕÒÕÒudf°ïÖú£¬ÎÒÍüÁË£»
k=0.274;
source=ÏûºÄËÙÂʼÆË㹫ʽ£»
return source
}

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