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Â¥: Originally posted by gyctju at 2012-01-08 21:11:19:
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#include "udf.h"
real Q_t ...

12Â¥: Originally posted by xiaoguai3 at 2012-01-09 09:29:51:
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Â¥: Originally posted by gyctju at 2012-01-09 10:45:24:
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16Â¥: Originally posted by gyctju at 2012-01-09 19:16:54:
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#include "udf.h"
#define cp 800.
#define density 2180.
FILE *fp;

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.};  
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)(((int)a)/24);

if (b==(int)b)   
Q_tot=0;
else
{
fp=fopen("Q_tot.txt","r");
fscanf(fp,"%f",Q_tot);
fclose(fp);
}
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 stepÓÐÎÊÌ⣡£¡£¡£¡£¡£¡£¡£¡*/
tempn=C_T(c,ct);   /*Get cell tempertuare*/
Q=cp*density*volume*(tempn-templ);
Q_tot +=Q;
       }
     end_c_loop(c,ct)
}
fp=fopen("Q_tot.txt","w");
  fprintf(fp,"%f",Q_tot);    /*дÈëÀÛ¼ÓºóQ_totÖµ */
fclose(fp);
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)
}