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huizheng

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#include "math.h"
#define T_SAT 373.15      // ¶¨ÒåÕô·¢ÎÂ¶È 100 ¡æ//
#define LAT_HT 2.257e6    //¶¨ÒåÕô·¢Ç±ÈÈ J/KgÄã¿ÉÒÔ¸ù¾ÝÐèÒª×Ô¼º¸Ä
#define  pi 3.1415                                            /*Ô²ÖÜÂʳ£Êý*/
#define  R 8.314                                             /*gas constant 8.314j/mol.K*/
#define  moleweight 0.018                                   /*SI unit water mole weight 0.018kg/mol */
#define A 7.19621
#define B 1730.63
#define C 233.426                  

DEFINE_MASS_TRANSFER(liq_gas_source,cell,thread,from_index,from_species_index, to_index, to_species_index)
{
#if!RP_HOST
real m_lg;
real P_SAT;
#endif

#if!RP_HOST
P_SAT = exp(A-B/(20+273.15+C-273.15))*1e3;
Thread *gas = THREAD_SUB_THREAD(thread, from_index);
Thread *liq = THREAD_SUB_THREAD(thread, to_index);
m_lg = 0.;
#endif

#if!RP_HOST
if (C_P(cell, liq) <= P_SAT)
{
m_lg =(P_SAT-C_P(cell,liq))*sqrt(moleweight/(2*pi*R*C_T(cell,liq)));
}
#endif

#if!RP_HOST
if (C_P(cell,gas)>P_SAT)
{
m_lg = (P_SAT-C_P(cell,gas))*sqrt(moleweight/(2*pi*R*C_T(cell,gas)));
}
#endif

return (m_lg);
}
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