124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
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/*************************************************************************
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* File : detail.h
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* Description: Header file for the 'Detail' class
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* See 'detail.cpp' for the implementation.
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* Version : ver 1.7 2002.11.17
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* Author : W.B. Peterson
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*Revisions:
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*Copyright (c) 2002 American Gas Association
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**************************************************************************/
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#ifndef _DETAIL_H #define _DETAIL_H
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#include "aga10.h"
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class Detail
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{
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private:
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// member data
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int iNCC ; // number of components
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int aiCID[21] ; // component IDs
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//five history variables are used to improve efficiency during repeated calculations double dOldMixID ; // mixture ID from previous calc
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double dOldPb ; // Pb from previous calc double dOldTb ; // Tb from previous calc double dOldPf ; // Pf from previous calc double dOldTf ; // Tf from previous calc
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//EOS parameters from table 4, column 1
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double adAn[58] ; double adUn[58] ;
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// characterization parameters from table 5
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double dMri[21] ; // molecular weight of ith component
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double dEi[21] ; // characteristic energy parameter for ith component double dKi[21] ; // size parameter for ith component - m^3/kg-mol ^1/3 double dGi[21] ; // orientation parameter
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double dQi[21] ; // quadrupole parameter double dFi[21] ; // high temperature parameter
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double dSi[21] ; // dipole parameter
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double dWi[21] ; // association parameter
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double dEij[21][21] ; // virial coefficient energy binary interaction parm double dUij[21][21] ; // binary interaction parameter for conformal energy double dKij[21][21] ; // binary interaction parameter for size
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double dGij[21][21] ; // binary interaction parameter for orientation
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double adTable6Eij[21][21] ; // Table 6 constants double adTable6Uij[21][21] ; // Table 6 constants double adTable6Kij[21][21] ; // Table 6 constants double adTable6Gij[21][21] ; // Table 6 constants
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double adTable5Qi[21] ; // table 5 constants double adTable5Fi[21] ; // table 5 constants double adTable5Si[21] ; // table 5 constants double adTable5Wi[21] ; // table 5 constants
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double dXi[21] ; // mole fraction of component i
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double dPCalc ; // pressure calculated by pdetail()
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double dT ; // current temperature
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double dP ; // current pressure
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double dRhoTP ; // molar density at T & P
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double dB ; // 2nd virial coefficient, B
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double adBcoef[18] ; // 18 coefficients to calculate B
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double adFn[58] ; // function for coefficients of density
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double fx[58] ; // modified coefficients used for 3 derivs
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double dU ; // mixture energy parameter
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double dKp3 ; // mixture size parameter ^3
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double dW ; // mixture orientation parameter
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double dQp2 ; // mixture quadrupole parameter ^2
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double dF ; // high temperature parameter
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double dRho ; // molar density
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double dRhoL ; // low density used in braket function
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double dRhoH ; // high density used in braket function
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double dPRhoL ; // low pressure used in braket function double dPRhoH ; // high pressure used in braket function
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// private class methods
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bool compositionchange(AGA10STRUCT *) ; // compares new composition to old
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void table() ; // sets up Table 4 and 6 characterization parms
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void paramdl() ; // Table 5 and binary interaction parms
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void chardl(AGA10STRUCT *) ; // calculates composition dependent quantities
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void bvir() ; // calculates the 2nd virial coefficient
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void temp() ; // calculates temperature dependent quantities
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void braket(AGA10STRUCT *) ; // brackets density solutions
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void pdetail(double) ; // calculates pressure as a function of P and T
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void ddetail(AGA10STRUCT *) ; // calculates a density, given pressure & temperature
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void relativedensity(AGA10STRUCT *) ; // calculates mass density
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protected:
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public:
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Detail(void) ; // default constructor ~Detail() ; // default destructor
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//public functions to support advanced fluid property calculations double zdetail(double) ; // calculates compressibility factor
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double dZdT(double) ; // calculates 1st partial derivative of Z wrt T double d2ZdT2(double) ; // calculates 2st partial derivative of Z wrt T double dZdD(double) ; // calculates 1st partial derivative of Z wrt D
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//public variables also used for advanced fluid property calculations
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double dZ ; // current compressibility
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double ddZdT ; // first partial derivative of Z wrt T
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double dd2ZdT2 ; // second partial derivative of Z wrt T
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double ddZdD ; // first partial derivative of Z wrt molar density
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double ddBdT ; // first partial derivative of B wrt T
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double dd2BdT2 ; // second partial derivative of B wrt T
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// the Run() command launches a full calculation sequence void Run(AGA10STRUCT *) ;
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} ;
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#endif
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