390 lines
13 KiB
C++
390 lines
13 KiB
C++
#include "gtest/gtest.h"
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#include "cantera/kinetics/importKinetics.h"
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#include "cantera/thermo/IdealGasPhase.h"
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#include "cantera/thermo/SurfPhase.h"
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#include "cantera/kinetics/GasKinetics.h"
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#include "cantera/kinetics/InterfaceKinetics.h"
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#include "cantera/base/Array.h"
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using namespace Cantera;
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class KineticsFromScratch : public testing::Test
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{
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public:
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KineticsFromScratch()
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: p("../data/kineticsfromscratch.cti")
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, p_ref("../data/kineticsfromscratch.cti")
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{
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std::vector<ThermoPhase*> th;
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th.push_back(&p_ref);
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importKinetics(p_ref.xml(), th, &kin_ref);
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kin.addPhase(p);
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kin.init();
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}
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IdealGasPhase p;
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IdealGasPhase p_ref;
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GasKinetics kin;
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GasKinetics kin_ref;
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//! iRef is the index of the corresponding reaction in the reference mech
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void check_rates(int iRef) {
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ASSERT_EQ((size_t) 1, kin.nReactions());
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std::string X = "O:0.02 H2:0.2 O2:0.5 H:0.03 OH:0.05 H2O:0.1 HO2:0.01";
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p.setState_TPX(1200, 5*OneAtm, X);
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p_ref.setState_TPX(1200, 5*OneAtm, X);
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vector_fp k(1), k_ref(kin_ref.nReactions());
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kin.getFwdRateConstants(&k[0]);
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kin_ref.getFwdRateConstants(&k_ref[0]);
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EXPECT_DOUBLE_EQ(k_ref[iRef], k[0]);
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kin.getRevRateConstants(&k[0]);
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kin_ref.getRevRateConstants(&k_ref[0]);
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EXPECT_DOUBLE_EQ(k_ref[iRef], k[0]);
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}
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};
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TEST_F(KineticsFromScratch, add_elementary_reaction)
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{
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// reaction 0:
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// reaction('O + H2 <=> H + OH', [3.870000e+01, 2.7, 6260.0])
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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kin.addReaction(R);
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kin.finalize();
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check_rates(0);
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}
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TEST_F(KineticsFromScratch, add_three_body_reaction)
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{
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// reaction 1:
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// three_body_reaction('2 O + M <=> O2 + M', [1.200000e+11, -1.0, 0.0],
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// efficiencies='AR:0.83 H2:2.4 H2O:15.4')
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Composition reac = parseCompString("O:2");
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Composition prod = parseCompString("O2:1");
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Arrhenius rate(1.2e11, -1.0, 0.0);
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ThirdBody tbody;
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tbody.efficiencies = parseCompString("AR:0.83 H2:2.4 H2O:15.4");
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shared_ptr<ThreeBodyReaction> R(new ThreeBodyReaction(reac, prod, rate, tbody));
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kin.addReaction(R);
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kin.finalize();
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check_rates(1);
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}
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TEST_F(KineticsFromScratch, undefined_third_body)
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{
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Composition reac = parseCompString("O:2");
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Composition prod = parseCompString("O2:1");
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Arrhenius rate(1.2e11, -1.0, 0.0);
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ThirdBody tbody;
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tbody.efficiencies = parseCompString("H2:0.1 CO2:0.83");
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shared_ptr<ThreeBodyReaction> R(new ThreeBodyReaction(reac, prod, rate, tbody));
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ASSERT_THROW(kin.addReaction(R), CanteraError);
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}
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TEST_F(KineticsFromScratch, skip_undefined_third_body)
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{
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Composition reac = parseCompString("O:2");
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Composition prod = parseCompString("O2:1");
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Arrhenius rate(1.2e11, -1.0, 0.0);
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ThirdBody tbody;
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tbody.efficiencies = parseCompString("H2:0.1 CO2:0.83");
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shared_ptr<ThreeBodyReaction> R(new ThreeBodyReaction(reac, prod, rate, tbody));
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kin.skipUndeclaredThirdBodies(true);
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kin.addReaction(R);
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ASSERT_EQ((size_t) 1, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, add_falloff_reaction)
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{
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// reaction 2:
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// falloff_reaction('2 OH (+ M) <=> H2O2 (+ M)',
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// kf=[7.400000e+10, -0.37, 0.0],
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// kf0=[2.300000e+12, -0.9, -1700.0],
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// efficiencies='AR:0.7 H2:2.0 H2O:6.0',
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// falloff=Troe(A=0.7346, T3=94.0, T1=1756.0, T2=5182.0))
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Composition reac = parseCompString("OH:2");
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Composition prod = parseCompString("H2O2:1");
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Arrhenius high_rate(7.4e10, -0.37, 0.0);
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Arrhenius low_rate(2.3e12, -0.9, -1700.0 / GasConst_cal_mol_K);
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vector_fp falloff_params { 0.7346, 94.0, 1756.0, 5182.0 };
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ThirdBody tbody;
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tbody.efficiencies = parseCompString("AR:0.7 H2:2.0 H2O:6.0");
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shared_ptr<FalloffReaction> R(new FalloffReaction(reac, prod, low_rate,
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high_rate, tbody));
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R->falloff = newFalloff(TROE_FALLOFF, falloff_params);
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kin.addReaction(R);
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kin.finalize();
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check_rates(2);
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}
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TEST_F(KineticsFromScratch, add_plog_reaction)
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{
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// reaction 3:
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// pdep_arrhenius('H2 + O2 <=> 2 OH',
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// [(0.01, 'atm'), 1.212400e+16, -0.5779, 10872.7],
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// [(1.0, 'atm'), 4.910800e+31, -4.8507, 24772.8],
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// [(10.0, 'atm'), 1.286600e+47, -9.0246, 39796.5],
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// [(100.0, 'atm'), 5.963200e+56, -11.529, 52599.6])
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Composition reac = parseCompString("H2:1, O2:1");
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Composition prod = parseCompString("OH:2");
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std::multimap<double, Arrhenius> rates {
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{ 0.01*101325, Arrhenius(1.212400e+16, -0.5779, 10872.7 / GasConst_cal_mol_K) },
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{ 1.0*101325, Arrhenius(4.910800e+31, -4.8507, 24772.8 / GasConst_cal_mol_K) },
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{ 10.0*101325, Arrhenius(1.286600e+47, -9.0246, 39796.5 / GasConst_cal_mol_K) },
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{ 100.0*101325, Arrhenius(5.963200e+56, -11.529, 52599.6 / GasConst_cal_mol_K) }
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};
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shared_ptr<PlogReaction> R(new PlogReaction(reac, prod, Plog(rates)));
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kin.addReaction(R);
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kin.finalize();
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check_rates(3);
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}
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TEST_F(KineticsFromScratch, plog_invalid_rate)
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{
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Composition reac = parseCompString("H2:1, O2:1");
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Composition prod = parseCompString("OH:2");
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std::multimap<double, Arrhenius> rates {
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{ 0.01*101325, Arrhenius(1.2124e+16, -0.5779, 10872.7 / GasConst_cal_mol_K) },
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{ 10.0*101325, Arrhenius(1e15, -1, 10000 / GasConst_cal_mol_K) },
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{ 10.0*101325, Arrhenius(-2e20, -2.0, 20000 / GasConst_cal_mol_K) },
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{ 100.0*101325, Arrhenius(5.9632e+56, -11.529, 52599.6 / GasConst_cal_mol_K) }
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};
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shared_ptr<PlogReaction> R(new PlogReaction(reac, prod, Plog(rates)));
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ASSERT_THROW(kin.addReaction(R), CanteraError);
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}
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TEST_F(KineticsFromScratch, add_chebyshev_reaction)
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{
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// reaction 4:
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// chebyshev_reaction(
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// 'HO2 <=> OH + O',
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// Tmin=290.0, Tmax=3000.0,
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// Pmin=(0.0098692326671601278, 'atm'), Pmax=(98.692326671601279, 'atm'),
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// coeffs=[[ 8.2883e+00, -1.1397e+00, -1.2059e-01, 1.6034e-02],
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// [ 1.9764e+00, 1.0037e+00, 7.2865e-03, -3.0432e-02],
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// [ 3.1770e-01, 2.6889e-01, 9.4806e-02, -7.6385e-03]])
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Composition reac = parseCompString("HO2:1");
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Composition prod = parseCompString("OH:1 O:1");
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Array2D coeffs(3, 4);
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coeffs(0,0) = 8.2883e+00;
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coeffs(0,1) = -1.1397e+00;
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coeffs(0,2) = -1.2059e-01;
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coeffs(0,3) = 1.6034e-02;
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coeffs(1,0) = 1.9764e+00;
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coeffs(1,1) = 1.0037e+00;
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coeffs(1,2) = 7.2865e-03;
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coeffs(1,3) = -3.0432e-02;
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coeffs(2,0) = 3.1770e-01;
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coeffs(2,1) = 2.6889e-01;
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coeffs(2,2) = 9.4806e-02;
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coeffs(2,3) = -7.6385e-03;
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ChebyshevRate rate(290, 3000, 1000.0, 10000000.0, coeffs);
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shared_ptr<ChebyshevReaction> R(new ChebyshevReaction(reac, prod, rate));
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kin.addReaction(R);
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kin.finalize();
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check_rates(4);
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}
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TEST_F(KineticsFromScratch, undeclared_species)
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{
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Composition reac = parseCompString("CO:1 OH:1");
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Composition prod = parseCompString("CO2:1 H:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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ASSERT_THROW(kin.addReaction(R), CanteraError);
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ASSERT_EQ(0, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, skip_undeclared_species)
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{
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Composition reac = parseCompString("CO:1 OH:1");
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Composition prod = parseCompString("CO2:1 H:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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kin.skipUndeclaredSpecies(true);
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kin.addReaction(R);
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ASSERT_EQ(0, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, negative_A_error)
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{
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(-3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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ASSERT_THROW(kin.addReaction(R), CanteraError);
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ASSERT_EQ(0, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, allow_negative_A)
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{
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(-3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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R->allow_negative_pre_exponential_factor = true;
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kin.addReaction(R);
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ASSERT_EQ((size_t) 1, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, invalid_reversible_with_orders)
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{
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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R->orders["H2"] = 0.5;
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ASSERT_THROW(kin.addReaction(R), CanteraError);
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ASSERT_EQ(0, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, negative_order_override)
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{
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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R->reversible = false;
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R->allow_negative_orders = true;
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R->orders["H2"] = - 0.5;
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kin.addReaction(R);
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ASSERT_EQ((size_t) 1, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, invalid_negative_orders)
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{
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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R->reversible = false;
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R->orders["H2"] = - 0.5;
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ASSERT_THROW(kin.addReaction(R), CanteraError);
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ASSERT_EQ(0, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, nonreactant_order_override)
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{
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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R->reversible = false;
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R->allow_nonreactant_orders = true;
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R->orders["OH"] = 0.5;
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kin.addReaction(R);
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ASSERT_EQ((size_t) 1, kin.nReactions());
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}
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TEST_F(KineticsFromScratch, invalid_nonreactant_order)
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{
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Composition reac = parseCompString("O:1 H2:1");
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Composition prod = parseCompString("H:1 OH:1");
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Arrhenius rate(3.87e1, 2.7, 6260.0 / GasConst_cal_mol_K);
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shared_ptr<ElementaryReaction> R(new ElementaryReaction(reac, prod, rate));
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R->reversible = false;
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R->orders["OH"] = 0.5;
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ASSERT_THROW(kin.addReaction(R), CanteraError);
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ASSERT_EQ(0, kin.nReactions());
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}
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class InterfaceKineticsFromScratch : public testing::Test
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{
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public:
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InterfaceKineticsFromScratch()
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: gas("../data/sofc-test.xml", "gas")
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, gas_ref("../data/sofc-test.xml", "gas")
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, surf("../data/sofc-test.xml", "metal_surface")
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, surf_ref("../data/sofc-test.xml", "metal_surface")
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{
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std::vector<ThermoPhase*> th = { &surf_ref, &gas_ref };
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importKinetics(surf_ref.xml(), th, &kin_ref);
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kin.addPhase(surf);
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kin.addPhase(gas);
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kin.init();
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}
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IdealGasPhase gas;
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IdealGasPhase gas_ref;
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SurfPhase surf;
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SurfPhase surf_ref;
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InterfaceKinetics kin;
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InterfaceKinetics kin_ref;
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//! iRef is the index of the corresponding reaction in the reference mech
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void check_rates(int iRef) {
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ASSERT_EQ((size_t) 1, kin.nReactions());
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std::string X = "H2:0.2 O2:0.5 H2O:0.1 N2:0.2";
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std::string Xs = "H(m):0.1 O(m):0.2 OH(m):0.3 (m):0.4";
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gas.setState_TPX(1200, 5*OneAtm, X);
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gas_ref.setState_TPX(1200, 5*OneAtm, X);
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surf.setState_TP(1200, 5*OneAtm);
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surf_ref.setState_TP(1200, 5*OneAtm);
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surf.setCoveragesByName(Xs);
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surf_ref.setCoveragesByName(Xs);
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vector_fp k(1), k_ref(kin_ref.nReactions());
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kin.getFwdRateConstants(&k[0]);
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kin_ref.getFwdRateConstants(&k_ref[0]);
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EXPECT_DOUBLE_EQ(k_ref[iRef], k[0]);
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kin.getRevRateConstants(&k[0]);
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kin_ref.getRevRateConstants(&k_ref[0]);
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EXPECT_DOUBLE_EQ(k_ref[iRef], k[0]);
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}
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};
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TEST_F(InterfaceKineticsFromScratch, add_surface_reaction)
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{
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// Reaction 3 on the metal surface
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// surface_reaction( "H(m) + O(m) <=> OH(m) + (m)",
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// [5.00000E+22, 0, 100.0], id = 'metal-rxn4')
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Composition reac = parseCompString("H(m):1 O(m):1");
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Composition prod = parseCompString("OH(m):1 (m):1");
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Arrhenius rate(5e21, 0, 100.0e6 / GasConstant); // kJ/mol -> J/kmol
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shared_ptr<InterfaceReaction>R(new InterfaceReaction(reac, prod, rate));
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kin.addReaction(R);
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kin.finalize();
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check_rates(3);
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}
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TEST_F(InterfaceKineticsFromScratch, add_sticking_reaction)
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{
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// Reaction 0 on the metal surface
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// surface_reaction( "H2 + (m) + (m) <=> H(m) + H(m)",
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// stick(0.1, 0, 0), id = 'metal-rxn1')
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Composition reac = parseCompString("H2:1 (m):2");
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Composition prod = parseCompString("H(m):2");
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Arrhenius rate(0.1, 0, 0.0);
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shared_ptr<InterfaceReaction>R(new InterfaceReaction(reac, prod, rate, true));
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kin.addReaction(R);
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kin.finalize();
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check_rates(0);
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}
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