164 lines
4 KiB
C++
164 lines
4 KiB
C++
/**
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* @file ConstCpPoly.cpp
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* Declarations for the \link Cantera::SpeciesThermoInterpType SpeciesThermoInterpType \endlink object that
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* employs a constant heat capacity assumption (see \ref spthermo and
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* \link Cantera::ConstCpPoly ConstCpPoly \endlink).
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*/
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// Copyright 2001 California Institute of Technology
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#include "ConstCpPoly.h"
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#include <cmath>
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namespace Cantera
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{
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ConstCpPoly::ConstCpPoly()
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: m_t0(0.0),
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m_cp0_R(0.0),
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m_h0_R(0.0),
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m_s0_R(0.0),
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m_logt0(0.0),
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m_lowT(0.0),
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m_highT(0.0),
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m_Pref(0.0),
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m_index(0)
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{
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}
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ConstCpPoly::ConstCpPoly(size_t n, doublereal tlow, doublereal thigh,
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doublereal pref,
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const doublereal* coeffs) :
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m_lowT(tlow),
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m_highT(thigh),
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m_Pref(pref),
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m_index(n)
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{
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m_t0 = coeffs[0];
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m_h0_R = coeffs[1] / GasConstant;
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m_s0_R = coeffs[2] / GasConstant;
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m_cp0_R = coeffs[3] / GasConstant;
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m_logt0 = log(m_t0);
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}
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ConstCpPoly::ConstCpPoly(const ConstCpPoly& b) :
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m_t0(b.m_t0),
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m_cp0_R(b.m_cp0_R),
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m_h0_R(b.m_h0_R),
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m_s0_R(b.m_s0_R),
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m_logt0(b.m_logt0),
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m_lowT(b.m_lowT),
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m_highT(b.m_highT),
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m_Pref(b.m_Pref),
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m_index(b.m_index)
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{
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}
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ConstCpPoly& ConstCpPoly::operator=(const ConstCpPoly& b)
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{
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if (&b != this) {
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m_t0 = b.m_t0;
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m_cp0_R = b.m_cp0_R;
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m_h0_R = b.m_h0_R;
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m_s0_R = b.m_s0_R;
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m_logt0 = b.m_logt0;
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m_lowT = b.m_lowT;
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m_highT = b.m_highT;
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m_Pref = b.m_Pref;
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m_index = b.m_index;
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}
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return *this;
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}
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SpeciesThermoInterpType*
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ConstCpPoly::duplMyselfAsSpeciesThermoInterpType() const
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{
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return new ConstCpPoly(*this);
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}
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doublereal ConstCpPoly::minTemp() const
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{
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return m_lowT;
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}
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doublereal ConstCpPoly::maxTemp() const
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{
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return m_highT;
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}
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doublereal ConstCpPoly::refPressure() const
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{
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return m_Pref;
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}
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void ConstCpPoly::updateProperties(const doublereal* tt,
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doublereal* cp_R,
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doublereal* h_RT,
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doublereal* s_R) const
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{
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double t = *tt;
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doublereal logt = log(t);
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doublereal rt = 1.0/t;
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cp_R[m_index] = m_cp0_R;
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h_RT[m_index] = rt*(m_h0_R + (t - m_t0) * m_cp0_R);
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s_R[m_index] = m_s0_R + m_cp0_R * (logt - m_logt0);
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}
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void ConstCpPoly::updatePropertiesTemp(const doublereal temp,
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doublereal* cp_R,
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doublereal* h_RT,
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doublereal* s_R) const
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{
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doublereal logt = log(temp);
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doublereal rt = 1.0/temp;
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cp_R[m_index] = m_cp0_R;
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h_RT[m_index] = rt*(m_h0_R + (temp - m_t0) * m_cp0_R);
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s_R[m_index] = m_s0_R + m_cp0_R * (logt - m_logt0);
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}
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void ConstCpPoly::reportParameters(size_t& n, int& type,
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doublereal& tlow, doublereal& thigh,
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doublereal& pref,
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doublereal* const coeffs) const
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{
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n = m_index;
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type = CONSTANT_CP;
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tlow = m_lowT;
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thigh = m_highT;
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pref = m_Pref;
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coeffs[0] = m_t0;
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coeffs[1] = m_h0_R * GasConstant;
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coeffs[2] = m_s0_R * GasConstant;
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coeffs[3] = m_cp0_R * GasConstant;
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}
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void ConstCpPoly::modifyParameters(doublereal* coeffs)
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{
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m_t0 = coeffs[0];
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m_h0_R = coeffs[1] / GasConstant;
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m_s0_R = coeffs[2] / GasConstant;
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m_cp0_R = coeffs[3] / GasConstant;
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m_logt0 = log(m_t0);
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}
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#ifdef H298MODIFY_CAPABILITY
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doublereal ConstCpPoly::reportHf298(doublereal* const h298) const
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{
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double temp = 298.15;
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doublereal h = GasConstant * (m_h0_R + (temp - m_t0) * m_cp0_R);
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if (h298) {
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h298[m_index] = h;
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}
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return h;
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}
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void ConstCpPoly::modifyOneHf298(const size_t& k, const doublereal Hf298New)
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{
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if (k != m_index) {
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return;
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}
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doublereal hnow = reportHf298();
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doublereal delH = Hf298New - hnow;
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m_h0_R += delH / GasConstant;
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}
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#endif
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}
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