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[ÇóÖú] ¹ÌÌå±ÚÃæÎü¸½¼×È©udf±àдԴÏî

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±ÚÃæÎü¸½º¯ÊýΪS=(C(x,t)-C(x,t-1))*Ks/delta time£¬ÕâÀïµÄŨ¶ÈÊÇÓÃÒþʽ¸ñʽ£¬¼´´ËʱºÍÉÏһʱ¿ÌŨ¶ÈµÄ²îÖµ¡£ÐèÒªÖ¸³öµÄÊÇ£¬Ö»ÓÐÔÚ½ü±ÚÃæµÄʱºò²Å·¢ÉúÎü¸½×÷Óã¬ÆäËûÇøÓòS=0.¡£
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#include"udf.h"
#define Ks=1000.0
/*ÖÊÔ´±í´ïʽ*/
DEFINE_SOURCE(mass_source,f,t,dS,eqn)
{
        real physical_dt,phi_old,con,source=0.0;
        int zone_ID=22;/*±ÚÃæID*/
        cell_t c0;
        face_t f;
        Thread *t0;
        Thread *inletstrip=Lookup_Thread(Get_Domain(1),zone_ID);
        c0=F_C0(f,inletstrip);
        t0=THREAD_T0(inletstrip); /*±ÚÃæÖ¸Õë*/
        /*begin_f_loop(f,t0)        {*/
        physical_dt=RP_Get_Real("physical-time-step";/*Çó³ödelta time*/
        phi_old=C_STORAGE_R(f,t0,SV_Yi_M1(i)); /*ÉÏһʱ¿ÌµÄ×é·Ö·ÖÊý*/
        con=0.5*Ks*(F_Yi(f,t0)/*-phi_old*/);
        source=2.0*con/physical_dt;               
        /*}        end_f_loop(f,t0)        */
               
        dS[eqn]=0.0;
        return source;
}

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