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#include "udf.h"
DEFINE_SOURCE(wall_msource,c,t,dS,eqn)
{
        real source,temp,pres,dens;
        real m_f,diff;
        int i=0;
        temp=C_T(c,t);
        pres=C_P(c,t);
        dens=C_R(c,t);
        m_f=C_YI(c,t,i);
        C_UDMI(c,t,0)=C_YI_G(c,t,i)[0];
        diff=(2.775e-6+4.479e-8*temp+1.656e-10*temp*temp)*pres/100;
        source=dens*diff*C_UDMI(c,t,0)/(1-m_f);
        return source;
}
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