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# include "udf.h"         
# include "sg_mphase.h"   
# define T_SAT 373.15         
# define lam 0.1   
# define LAT 2250                                   
  DEFINE_PROPERTY(surface_tem,c,t)                             
{
    real surface;
    real temp=C_T(c,t);
    surface=0.09537-2.24*(pow(10,-6))*temp-2.56*(pow(10,-7))*pow(temp,2);
    return surface;
}

DEFINE_SOURCE(liq_src,cell,first,dS,eqn)      
{
    Thread *mixer,*second;                    
    real m_dot_first;                          
    mixer=THREAD_SUPER_THREAD(first);         
    second=THREAD_SUB_THREAD(mixer,1);         
    if(C_T(cell,mixer)>=T_SAT)               
        {
        m_dot_first=-lam*C_VOF(cell,first)*C_R(cell,first)*fabs(C_T(cell,mixer)-T_SAT)/T_SAT;   
        dS[eqn]=-lam*C_R(cell,first)*fabs(C_T(cell,mixer)-T_SAT)/T_SAT;   
        }
    else                                    
        {
        m_dot_first=lam*C_VOF(cell,first)*C_R(cell,first)*fabs(C_T(cell,mixer)-T_SAT)/T_SAT;
        dS[eqn]=0;  
        }
return m_dot_first;
}

DEFINE_SOURCE(vap_src,cell,second,dS,eqn)         
{  
    Thread *mixer,*first;                           
    real m_dot_second;                              
    mixer=THREAD_SUPER_THREAD(second);              
    first=THREAD_SUB_THREAD(mixer,0);               
    if(C_T(cell,mixer)>=T_SAT)
        {
        m_dot_second=lam*C_VOF(cell,first)*C_R(cell,first)*fabs(C_T(cell,mixer)-T_SAT)/T_SAT;  
        dS[eqn]=0;      
        }
    else                                    
        {
        m_dot_second=-lam*C_VOF(cell,second)*C_R(cell,second)*fabs(C_T(cell,mixer)-T_SAT)/T_SAT;
        dS[eqn]=-lam*C_R(cell,second)*fabs(C_T(cell,second)-T_SAT)/T_SAT;   
        }
return m_dot_second;
}

DEFINE_SOURCE(enrg_src,cell,mixer,dS,eqn)     
{
    Thread *first,*second;
    real m_dot;
    first=THREAD_SUB_THREAD(mixer,0);                              
    second=THREAD_SUB_THREAD(mixer,1);                             
    if(C_T(cell,mixer)>=T_SAT)
        {
        m_dot=-lam*C_VOF(cell,first)*C_R(cell,first)*fabs(C_T(cell,first)-T_SAT)/T_SAT;  
        dS[eqn]=-lam*C_VOF(cell,first)*C_R(cell,first)/T_SAT;
        }
    else                                 
        {
        m_dot=lam*C_VOF(cell,second)*C_R(cell,second)*fabs(C_T(cell,mixer)-T_SAT)/T_SAT;  
        dS[eqn]=-lam*C_VOF(cell,second)*C_R(cell,second)/T_SAT;
        }
return LAT*m_dot;      
}
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