118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
#include "gtest/gtest.h"
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#include "cantera/thermo/NasaPoly1.h"
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namespace Cantera
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{
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// CO2 low-temperature polynomial from GRI 3.0. Note that this order is
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// different from the order used by CHEMKIN, with the 1/T and log(T)
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// coefficients appearing first.
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static double coeffs[] = {-4.83719697e+04,
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9.90105222e+00,
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2.35677352e+00,
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8.98459677e-03,
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-7.12356269e-06,
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2.45919022e-09,
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-1.43699548e-13,
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};
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class NasaPoly1Test : public testing::Test
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{
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public:
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NasaPoly1Test()
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: poly(0, 200.0, 1000.0, 101325.0, coeffs)
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, tpow_(6) {
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}
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protected:
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void set_tpow(double T) {
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tpow_[0] = T;
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tpow_[1] = T*T;
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tpow_[2] = T*T*T;
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tpow_[3] = T*T*T*T;
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tpow_[4] = 1.0/T;
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tpow_[5] = std::log(T);
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}
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void testEquivalent(NasaPoly1& p, NasaPoly1& q) {
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EXPECT_EQ(poly.minTemp(), q.minTemp());
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EXPECT_EQ(poly.maxTemp(), q.maxTemp());
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EXPECT_EQ(poly.refPressure(), q.refPressure());
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EXPECT_EQ(poly.speciesIndex(), q.speciesIndex());
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double cp_R1, h_RT1, s_R1;
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double cp_R2, h_RT2, s_R2;
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double T = 481.99;
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p.updatePropertiesTemp(T, &cp_R1, &h_RT1, &s_R1);
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q.updatePropertiesTemp(T, &cp_R2, &h_RT2, &s_R2);
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EXPECT_DOUBLE_EQ(cp_R1, cp_R2);
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EXPECT_DOUBLE_EQ(h_RT1, h_RT2);
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EXPECT_DOUBLE_EQ(s_R1, s_R2);
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}
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std::vector<double> tpow_;
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NasaPoly1 poly;
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};
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TEST_F(NasaPoly1Test, Initialization)
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{
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EXPECT_EQ(poly.minTemp(), 200.0);
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EXPECT_EQ(poly.maxTemp(), 1000.0);
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EXPECT_EQ(poly.refPressure(), 101325.0);
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EXPECT_EQ(poly.speciesIndex(), 0);
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}
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TEST_F(NasaPoly1Test, Copy)
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{
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NasaPoly1 q(poly);
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testEquivalent(poly, q);
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}
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TEST_F(NasaPoly1Test, Assignment)
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{
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NasaPoly1 q;
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q = poly;
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testEquivalent(poly, q);
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}
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TEST_F(NasaPoly1Test, updateProperties)
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{
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double cp_R, h_RT, s_R;
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// Reference values calculated using CHEMKIN II
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// Expect agreement to single-precision tolerance
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set_tpow(298.15);
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poly.updateProperties(&tpow_[0], &cp_R, &h_RT, &s_R);
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EXPECT_NEAR(4.46633496, cp_R, 1e-7);
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EXPECT_NEAR(-158.739244, h_RT, 1e-5);
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EXPECT_NEAR(25.7125777, s_R, 1e-6);
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set_tpow(876.54);
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poly.updateProperties(&tpow_[0], &cp_R, &h_RT, &s_R);
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EXPECT_NEAR(6.33029000, cp_R, 1e-7);
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EXPECT_NEAR(-50.3179924, h_RT, 1e-5);
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EXPECT_NEAR(31.5401226, s_R, 1e-6);
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}
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TEST_F(NasaPoly1Test, updatePropertiesTemp)
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{
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double cp_R1, h_RT1, s_R1;
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double cp_R2, h_RT2, s_R2;
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double T = 481.99;
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set_tpow(T);
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poly.updatePropertiesTemp(T, &cp_R1, &h_RT1, &s_R1);
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poly.updateProperties(&tpow_[0], &cp_R2, &h_RT2, &s_R2);
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EXPECT_DOUBLE_EQ(cp_R1, cp_R2);
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EXPECT_DOUBLE_EQ(h_RT1, h_RT2);
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EXPECT_DOUBLE_EQ(s_R1, s_R2);
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}
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} // namespace Cantera
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int main(int argc, char** argv)
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{
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printf("Running main() from nasapoly.cpp\n");
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testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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