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cpp -I"C:\Fluent.Inc\fluent6.3.26/src" -I"C:\Fluent.Inc\fluent6.3.26/cortex/src" -I"C:\Fluent.Inc\fluent6.3.26/client/src" -I"C:\Fluent.Inc\fluent6.3.26/multiport/src" -I. -DUDFCONFIG_H="" "E:\¼ÆËã\ÀäÄý-ÖØÊÔ\condensation-2.c"
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/***********************************************************************
UDF for defining the heat and mass transport for
multicomponent particle vaporization
***********************************************************************/
#include "udf.h"

DEFINE_DPM_HEAT_MASS(multivap,p,Cp,hgas,hvap,cvap_surf,dydt,dzdt){
        int ns;
        int nc=TP_N_COMPONENTS(p); /* number of particle components */
       
        //ÒÔÀëÉ¢ÏàPÈ·¶¨PËùÔڵĵ¥Ôª¼°Ïߣ¬ÒÔ¼°µ¥Ôª£¬´Ó¶øÕÒµ½¸Ãµ¥ÔªÁ¬ÐøÏàµÄÐÅÏ¢¡£
        cell_t c0=RP_CELL(&(p->cCell)); /* cell and thread */
        Thread *t0=RP_THREAD(&(p->cCell)); /* where the particle is in */
       
        //ÀëÉ¢ÏàºÍÁ¬ÐøÏàµÄ²ÄÁÏ
        Material *gas_mix=THREAD_MATERIAL(t0); /* gas mixture material */
        Material *cond_mix=p->injection->material;/* particle mixture material */

        cphase_state_t *c=&(p->cphase); /* cell info of particle location */

        //Á¬ÐøÏàµÄ·Ö×ÓÁ¿¼°Æ½¾ù·Ö×ÓÁ¿
        real molwt[MAX_SPE_EQNS]; /* molecular weight of gas species */
        real molwt_bulk=0.0; /* average molecular weight in bulk gas */

        //ÀëÉ¢ÏàµÄÐÅÏ¢£ºÎ¶ȡ¢ÖÊÁ¿¡¢Á£¾¶£¬±íÃæ»ý£¬ÆÕÀÊÌØÊýPr£¬Å¬Èü¶ûµÂÊýNu£¬±íÃæ¶ÔÁ÷ϵÊý£¬£»
        real Tp=P_T(p); /* particle temperature */
        real mp=P_MASS(p); /* particle mass */
        real Dp=DPM_DIAM_FROM_VOL(mp/P_RHO(p)); /* particle diameter */
        real Ap=DPM_AREA(Dp); /* particle surface */
        real Pr=c->sHeat*c->mu/c->tCond; /* Prandtl number */
        real Nu=2.0+0.6*sqrt(p->Re)*pow(Pr,1.0/3.0); /* Nusselt number ¿ÉÒÔ´Ó¡¶´«ÈÈ´«ÖÊ»ù±¾Ô­Àí¡·µÄP270µÄ¹«Ê½£¨7.56£©*/
        real h=Nu*c->tCond/Dp; /* Heat transfer coefficient */
        real dh_dt=h*(c->temp-Tp)*Ap; /* heat source term */
        dydt[0]+=dh_dt/(mp*Cp);
        dzdt->energy-=dh_dt;
       
        //Çó1/ƽ¾ù·Ö×ÓÁ¿µÄÖµ£¬ÔÚ½âÊÍÖÐΪƽ¾ù·Ö×ÓÁ¿£¬Êµ¼Ê¼ÆËãΪÆäµ¹Êý£¬Òò´ËÔÚÒýÓÃʱҪעÒâ
        {
                Material *sp;
                mixture_species_loop(gas_mix,sp,ns){
                        molwt[ns]=MATERIAL_PROP(sp,PROP_mwi); /* molecular weight of gas species */
                        molwt_bulk+=C_YI(c0,t0,ns)/molwt[ns]; /* average molecular weight */
                }
        }
        /* prevent division by zero */
        molwt_bulk=MAX(molwt_bulk,DPM_SMALL);

        for(ns=0;ns                 /* gas species index of vaporization */
                int gas_index=TP_COMPONENT_INDEX_I(p,ns);
                if(gas_index>=0){
                        /* condensed material */
                        Material *cond_c=MIXTURE_COMPONENT(cond_mix,ns);
                        /* vaporization temperature */
                        real vap_temp=MATERIAL_PROP(cond_c,PROP_vap_temp);
                        /* diffusion coefficient */
                        real D=MATERIAL_PROP_POLYNOMIAL(cond_c,PROP_binary_diffusivity,c->temp);
                        /* Schmidt number */
                        real Sc=c->mu/(c->rho*D);
                        /* mass transfer coefficient */
                        real k=(2.0+0.6*sqrt(p->Re)*pow(Sc,1.0/3.0))*D/Dp;
                        /* bulk gas concentration */
                        real cvap_bulk=c->pressure/UNIVERSAL_GAS_CONSTANT/c->temp*c->yi[gas_index]/molwt_bulk/solver_par.molWeight[gas_index];
                        /* vaporization rate */
                        real vap_rate=k*molwt[gas_index]*Ap*(cvap_surf[ns]-cvap_bulk);
                        /* only condensation below vaporization temperature */
                        if(0.0                                 vap_rate=0.0;
                        dydt[1+ns]-=vap_rate;
                        dzdt->species[gas_index]+=vap_rate;
                        /* dT/dt = dh/dt / (m Cp)*/
                        dydt[0]-=hvap[gas_index]*vap_rate/(mp*Cp);
                        /* gas enthalpy source term */
                        dzdt->energy+=hgas[gas_index]*vap_rate;
                }
        }
}
1.jpg[ Last edited by llongtan on 2012-11-19 at 15:13 ]
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  • 2012-11-19 15:09:25, 3.11 K
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  • 2012-11-19 15:13:59, 892.03 K
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  • 2012-11-19 15:14:03, 2.54 M

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llongtan: ½ð±Ò+2 2012-11-19 20:22:43
xiegangmai: ½ð±Ò+2, лл²ÎÓë 2012-11-20 21:49:40
cell_t c=RP_CELL(&(p->cCell));
   Thread *t=RP_THREAD(&(p->cCell));
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2Â¥: Originally posted by zjspring at 2012-11-19 19:13:37
cell_t c=RP_CELL(&(p->cCell));
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cell_t c=RP_CELL(&p->cCell);
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int nc=TP_N_COMPONENTS(p); /* number of particle components */
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llongtan

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2Â¥: Originally posted by zjspring at 2012-11-19 19:13:37
cell_t c=RP_CELL(&(p->cCell));
   Thread *t=RP_THREAD(&(p->cCell));
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cell_t c=RP_CELL(&p->cCell);
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