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²»ÖªµÀÊDz»ÊÇudfµÄÎÊÌ⣬ÌùÉÏÀ´Çó´óÉñ°ïæ¿´¿´ #include "udf.h" #include "math.h" #include "sg_udms.h" #include "mem.h" double EA=1.5e5; /*Aktivierungsenergie*/ double k0=1.0e28; double m=4.0; const double pi=3.141593; const double T=296.15; /*Temperatue*/ const double Nav=6.02e23; /*Avogadro*/ const double R_g=8.31; /* gas constant */ double A; /*oberflaechenkonzentration*/ double kg; double ks; double m_0,m_1,m_2; DEFINE_DIFFUSIVITY(partical_diffusivity,c,t,i) { double Sct=0.7; double D_tur; double D_mol=5e-9;/*¼ÆËãµÃ³ö£¬µ«ÊÇ·¢ÏÖÁ£¾¶Ö±½ÓÓ°Ïì×ÅÊýÁ¿¼¶*/ real D_eff; D_tur=C_MU_T(c,t)/Sct; D_eff=D_mol+D_tur; return D_eff; } DEFINE_SOURCE(surface_source,c,t,dS,eqn) { real a_p0 = 0.4991e-16; /*TiO2:±íÃæ»ý*/ real A ; /*±íÃæ»ýŨ¶È*/ double Amin; /*¿ÅÁ£µÈЧԲ±íÃæ»ý*/ double Rs; double tf; double d_p; /*Ö±¾¶*/ double a_p; /**/ double n_p; /*ÊýÁ¿ */ double d_v; double v_a; double J; real source; real Y_1 = C_YI(c,t,1); m_0 = C_UDSI(c,t,0); m_1 = C_UDSI(c,t,1); m_2 = C_UDSI(c,t,2); A = C_UDSI(c,t,3); d_p = 6.0*m_1/A; a_p = pi*pow((6*m_1/A),2.0); n_p = (1./(36*pi))*((pow(A,3.0))/(pow(m_1,2.)*m_0)); v_a=m_1/m_0; /* solve for v_a */ d_v=pow(6.0*(v_a/2.0)/pi,1./3.); /*v_a is Unknown number*/ tf=k0*pow(d_p,m)*(C_T(c,t)/T)*exp((EA/R_g)*(1./C_T(c,t)-1./T)); Amin=pow(pi*m_0,1./3.)*pow(6.0*m_1,2./3.); if(n_p<2.0) Rs=(A-Amin)/(tf*(d_v)); else { Rs=(n_p-1.0)*(0.41*a_p/(tf*d_p)); } kg=3.96e5*exp(-8479.7/C_T(c,t)); J=kg*Y_1*Nav; source=J*a_p0-Rs; dS[eqn]=0; return source; } DEFINE_SOURCE(TTIP_source,c,t,dS,eqn) { real x[ND_ND]; real w_1,w_2; real Y_1=C_YI(c,t,1); kg=3.96e5*exp(-8479.7/C_T(c,t)); ks=1e9*exp(-8479.7/C_T(c,t)); w_1=-(kg+ks*A)*Y_1; dS[eqn]=0; return w_1; } DEFINE_SOURCE(TiO2_source,c,t,dS,eqn) { real x[ND_ND]; real w_1,w_2; real Y_1=C_YI(c,t,1); kg=3.96e5*exp(-8479.7/C_T(c,t)); ks=1e9*exp(-8479.7/C_T(c,t)); w_1=-(kg+ks*A)*Y_1; w_2=-w_1; dS[eqn]=0; return w_2; } |
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