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# pragma once
# include "iAlgPvtBase.h"
# include "gasZg.h"
// 气体压缩系数
class M_PVT_EXPORT gasCg : public iAlgPvtBase
{
private :
enum PvtAlgMethod
{
PM_Dranchuk = 0
} ;
public :
gasCg ( ) ;
// 绑定成员变量
virtual void bindMembers ( ) ;
// 虚函数，计算函数
virtual bool cal ( VecDouble vecIns , VecDouble & vecOuts ) ;
public :
bool dranchuk ( VecDouble vecP , VecDouble & vecCg ) ;
private :
/// @brief 计算干气压缩系数 Cg
/// @param 输入：
/// @param T - 温度 (℃)
/// @param SG - 气体比重 (默认 0.7)
/// @out 输出：
/// 算法提供者，
double _dranchuk_novel_method ( double p , double T , double SG = 0.7 ) ;
/// @brief Dranchuk 方法计算天然气压缩因子 Z
/// @param Pr
/// @param Tr
/// 算法提供者，
double _cal_zg_by_dranchuk_directly ( double Pr , double Tr ) ;
private :
double m_dTpr ; //tpr,拟对比温度， ， ，
double m_dT ; // rt,油藏温度，
double m_dTc ; //tc,临界温度，不同的组分有不同的临界温度值,°C
double m_dRg ; //rg,气体比重，该气体的密度与空气密度之比，无量纲，具体情况具体分析,0.55-0.8
} ;