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lihongyang0

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[½»Á÷] FLuent ¿Õ»¯ UDFÄÜÁ¿Ô´Ïî

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#include "udf.h"
#include "sg_mphase.h"

DEFINE_SOURCE(energy_source,c,m_t,dS,eqn)
{
        Thread *l_t, *v_t;       
        real m_dot, hc, source, fv, dT,m_dot2,source2;
        real cigma_m, cigma_m2,flag;
        real D_l, D_v,p_loc;
        real p_sat,p_sat2, T_loc, p_vapor,dp, dp2, T_loc2, p_vapor2;
        real p1, p2, p3, p4,m_dot_Re,m_dot_Re2,m_dot_Rc,m_dot_Rc2;
        real F_vap, F_cond, temp1, hc2;
        p_loc=C_P(c,m_t)*1000000;
        F_vap=0.02;
        F_cond=0.01;
        l_t=THREAD_SUB_THREAD(m_t,0);
        v_t=THREAD_SUB_THREAD(m_t,1);
        fv=C_VOF(c,v_t)*C_R(c,v_t)/(C_VOF(c,v_t)*C_R(c,v_t)+C_VOF(c,l_t)*C_R(c,l_t));

        T_loc=C_T(c,m_t);
        p1=10.86;
        p2=-1980;
        p3=1.233*100000;
        p4=-2.617*1000000;
        p_sat=p1*T_loc*T_loc*T_loc+p2*T_loc*T_loc+p3*T_loc+p4;
        dT=0.01;
        T_loc2=T_loc+dT;
        p_sat2=p1*T_loc2*T_loc2*T_loc2+p2*T_loc2*T_loc2+p3*T_loc2+p4;
        p_vapor=p_sat+0.5*0.39*C_R(c,m_t)*C_K(c,m_t);
        p_vapor2=p_sat2+0.5*0.39*C_R(c,m_t)*C_K(c,m_t);
        p1=3.424e-09;
        p2=-1.867e-07;
        p3= -0.0002614;
        p4=0.02863;
        cigma_m=p1*T_loc*T_loc*T_loc+p2*T_loc*T_loc+p3*T_loc+p4;
        cigma_m2=p1*T_loc2*T_loc2*T_loc2+p2*T_loc2*T_loc2+p3*T_loc2+p4;
        p1=-0.0002051;
        p2=0.03527;
        p3=-3.064;
        p4=320.1;
        hc=p1*T_loc*T_loc*T_loc+p2*T_loc*T_loc+p3*T_loc+p4;

        hc2=p1*T_loc2*T_loc2*T_loc2+p2*T_loc2*T_loc2+p3*T_loc2+p4;

        dp=p_vapor-p_loc;
        dp2=p_vapor2-p_loc;
        temp1=sqrt(C_K(c,m_t));
        D_l=C_R(c,l_t);
        D_v=C_R(c,v_t);
        m_dot_Re=0.0;
        m_dot_Rc=0.0;
        source=0.0;
        source2=0.0;
        flag=1000.0;
        if(p_loc<=p_vapor)           
        {

                m_dot_Re=F_vap*temp1/cigma_m*D_l*D_v*sqrt(2/3*dp/D_l)*(1-fv);

        }
        if(p_loc>p_vapor)                              
        {
                m_dot_Rc=F_cond*temp1/cigma_m*D_l*D_l*sqrt(2/3*(-dp)/D_l)*fv;
       
        }

        source=(m_dot_Re-m_dot_Rc)*hc*flag;
       
        dS[eqn]=0.0;
       
        return source;
}
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