#include "udf.h"
#define cp 800
#define density 2180

DEFINE_PROFILE (unsteady_temp,t,i)
{
real tempn, templ, volume, Q,Q_tot,time,a,b,tempad;
real Heat[5]={278.5,280.7,278.5,280.5,285.2};
Domain *d;
Thread *t,*ct,*t0;
cell_t c,c0;
face_t f;
time = RP_Get_Real("flow-time");
a =time/3600;
b =a/24;
d = Get_Domain(1);
int i=(int)((int)a/24);
if (int(b)==b)   /*Èç¹ûbÊÇʵÊý£¬Q_tot¹éÁ㣬·ñÔòÔÚÒÔÍù¼ÆËãµÄ»ù´¡ÉÏÀÛ¼Ó[color=Red]ÎÒÕâÑù±í´ïÕýȷô?[/color]*/
Q_tot=0;
thread_loop_c(ct,d)  /*Compute Q */ /*Loop over all cellsÑ­»·DOMAINÉÏËùÓÐTHREAD */
{
        begin_c_loop(c,ct) /*Loop over all cellsÑ­»·ËùÓÐTHREADÉÏËùÓÐCELL */
       {
volume=C_VOLUME(c,ct); /* get cell volume */
templ=C_T_M1(c,ct); /*Get cell tempertuare of previous stepÓÐÎÊÌ⣡£¡£¡£¡£¡£¡£¡£¡*/
tempn=C_T(c,ct);   /*Get cell tempertuare*/
Q=cp*density*volume*(tempn-templ);
Q_tot +=Q;
       }
     end_c_loop(c,ct)
}
if (Q_tot<= Heat[i])
  begin_f_loop(f,t)
{   
    F_PROFILE(f,t,i)=333;  /*BC:Temp=333K*/
}
end_f_loop(f,t)
else
begin_f_loop(f,t)
{   
c0 = F_C0(f,t);
t0 = THREAD_T0(t);
tempad=C_T(c0,t0); /*temperature of adjacent cell  [color=Red]ÕâÑùÈ¡ÏàÁÚCELLζÈÕýÈ·Â𣿿ɲ»¿ÉÒÔÖ±½ÓÈ¡ÏàÁÚFACEµÄζÈÖµÄØ£¿²éÁËMANUALûÓп´µ½F_T(f0,t)µÄ±í´ï°¡[/color]*/
F_PROFILE(f,t,i)=tempad;
}
end_f_loop(f,t)
}

7Â¥: Originally posted by 47425804 at 2012-01-10 08:55:29:
UDFÀïºÃÏñû·¨ÓÃfprintf£¬ÖÁÉÙÎÒÊÔ¹ýû³É¹¦¡£
²»¹ý´æÎļþÄÜ°ìµ½µÄ£¬Ò»°ãÒ²¿ÉÒÔÓÃÈ«¾Ö±äÁ¿ÊµÏÖ¡£

#include "udf.h"
#define cp 800.
#define density 2180.
FILE *fp;
static Q_tot=0;

DEFINE_PROFILE(unsteady_temp,t,index)
{
float tempn,templ,volume,Q,Q_tot,time,a,b,tempad;
int i;
float Heat[5]={2780000.,        280.7,        278.5,        280.5,        285};  /*Êý×é*/
Domain *d;
Thread *ct,*t0;
cell_t c,c0;
face_t f;
time = RP_Get_Real("flow-time");
a = time/3600;
b = a/24;
d = Get_Domain(1);
i=((int)a)/24;
if ((int)b==b)   
Q_tot=0;
thread_loop_c(ct,d)  
{
        begin_c_loop(c,ct) /*Loop over all cellsÑ­»·ËùÓÐTHREADÉÏËùÓÐCELL */
       {
volume=C_VOLUME(c,ct); /* get cell volume */
templ=C_T_M1(c,ct); /*Get cell tempertuare of previous step*/
tempn=C_T(c,ct);   /*Get cell tempertuare*/
Q=cp*density*volume*(tempn-templ);
Q_tot +=Q;
       }
     end_c_loop(c,ct)
}
if (Q_tot<= Heat[i])
  begin_f_loop(f,t)
{   
    F_PROFILE(f,t,index)=333;  /*BC:Temp=333K*/
}
end_f_loop(f,t)
else
begin_f_loop(f,t)
{   
c0 = F_C0(f,t);
t0 = THREAD_T0(t);
tempad=C_T(c0,t0); /*temperature of adjacent cell*/
F_PROFILE(f,t,index)=tempad;
}
end_f_loop(f,t)
}

4Â¥: Originally posted by 47425804 at 2012-01-08 22:41:25:
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