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#include"udf.h"
#include"mem.h"
#define p_pretotal 350000
#define pcr 185000
#define R 287.06
#define k 1.4
#define T 300
DEFINE_ADJUST(on_demamd_avg,d)
{
        real p_sum = 0;
        real p;
        real v = 0;
        real r = 0,tem;
        real V;
        real xc[ND_ND];
        Thread *t;
        face_t f;
        Domain *d;
        d = Get_Domain(1); /*»ñÈ¡ÒºÌ¬ÇøÓòµÄÍø¸ñ */
        t=Lookup_Thread(d,12);/* ÕÒµ½³ö¿Ú½ØÃæµÄÏßÖ¸Õ루IDÔÚfluentÖеÄphaseÕҵģ© */
         /* µ¥ÔªÑ­»· */
               begin_f_loop(f,t)
                           {
                                   F_CENTROID(xc,f,t); /* ½«Íø¸ñ×ø±ê´æÈëÊý×éxcÖÐ */
                               p_sum = F_P(f, t);   
                               if(p_sum<=p_pretotal)
                   {   
                        if(p_sum>=pcr)
                            {
                                F_U(f,t)=sqrt((2*k*R*T/(k-1))*pow((1-(p_sum/p_pretotal)),(k-1)/k));
                             }
                                            else
                               F_U(f,t)=sqrt(k*R*T*pow((p_sum/p_pretotal),(k-1)/k));
                    }
                                        else
                       F_U(f,t)=0;   
                           }
                end_f_loop(f,t);
}
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Domain *d
Pointer to the domain over which the adjust function is to be applied. The domain argument provides access to all cell and face threads in the mesh. For multiphase flows, the pointer that is passed to the function by the solver is the mixture-level domain.
ÉÏÃæÊÇFLuent°ïÖú£¬Õâ¸ödÖ¸ÏòµÄÊÇmixture-level domain£¬ÄãµÄ³ÌÐòÀïÃæÓÖ½«ÒºÌ¬µÄ¸³¸ød£¬Õâ¸ö²»¶Ô°É£¬ÄãÔٺúÿ´¿´¶àÏàÁ÷µÄudf°ïÖú¡£ÎÒû±à¹ýDEFINE_ADJUST£¬¾Íµ±ÊÇÌá¸öÐÑ£¬¿ÉÄÜÒ²²»Ì«¶Ô
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