83 lines
3 KiB
C++
83 lines
3 KiB
C++
#include "gtest/gtest.h"
|
|
#include "cantera/thermo/WaterPropsIAPWSphi.h"
|
|
#include "cantera/thermo/WaterPropsIAPWS.h"
|
|
|
|
using namespace Cantera;
|
|
|
|
const double T_c = 647.096;
|
|
const double Rho_c = 322.0;
|
|
|
|
class WaterPropsIAPWSphi_Test : public testing::Test, public WaterPropsIAPWSphi
|
|
{
|
|
};
|
|
|
|
// Test agreement with values given in Table 6.6 of: W. Wagner, A. Pruss, "The
|
|
// IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water
|
|
// Substance for General and Scientific Use," J. Phys. Chem. Ref. Dat, 31, 387,
|
|
// 2002.
|
|
|
|
TEST_F(WaterPropsIAPWSphi_Test, check1) {
|
|
tdpolycalc(T_c / 500.0, 838.025 / Rho_c);
|
|
EXPECT_NEAR(phi0(), 2.047977334796e+00, 1e-11);
|
|
EXPECT_NEAR(phiR(), -3.426932056816e+00, 1e-11);
|
|
EXPECT_NEAR(phi0_d(), 3.842367471137e-01, 1e-11);
|
|
EXPECT_NEAR(phiR_d(), -3.643666503639e-01, 1e-11);
|
|
EXPECT_NEAR(phi0_dd(), -1.476378778326e-01, 1e-11);
|
|
EXPECT_NEAR(phiR_dd(), 8.560637009746e-01, 1e-11);
|
|
EXPECT_NEAR(phi0_t(), 9.046111061752e+00, 1e-11);
|
|
EXPECT_NEAR(phiR_t(), -5.814034352384e+00, 1e-11);
|
|
EXPECT_NEAR(phi0_tt(), -1.932491850131e+00, 1e-11);
|
|
EXPECT_NEAR(phiR_tt(), -2.234407368843e+00, 1e-11);
|
|
EXPECT_NEAR(phi0_dt(), 0.000000000000e+00, 1e-11);
|
|
EXPECT_NEAR(phiR_dt(), -1.121769146703e+00, 1e-11);
|
|
}
|
|
|
|
TEST_F(WaterPropsIAPWSphi_Test, check2) {
|
|
tdpolycalc(T_c / 647.0, 358.0 / Rho_c);
|
|
EXPECT_NEAR(phi0(), -1.563196050525e+00, 1e-11);
|
|
EXPECT_NEAR(phiR(), -1.212026565041e+00, 1e-11);
|
|
EXPECT_NEAR(phi0_d(), 8.994413407821e-01, 1e-11);
|
|
EXPECT_NEAR(phiR_d(), -7.140120243713e-01, 1e-11);
|
|
EXPECT_NEAR(phi0_dd(), -8.089947255079e-01, 1e-11);
|
|
EXPECT_NEAR(phiR_dd(), 4.757306956457e-01, 1e-11);
|
|
EXPECT_NEAR(phi0_t(), 9.803439179390e+00, 1e-11);
|
|
EXPECT_NEAR(phiR_t(), -3.217225007752e+00, 1e-11);
|
|
EXPECT_NEAR(phi0_tt(), -3.433163341431e+00, 1e-11);
|
|
EXPECT_NEAR(phiR_tt(), -9.960295065593e+00, 1e-11);
|
|
EXPECT_NEAR(phi0_dt(), 0.000000000000e+00, 1e-11);
|
|
EXPECT_NEAR(phiR_dt(), -1.332147204361e+00, 1e-11);
|
|
}
|
|
|
|
class WaterPropsIAPWS_Test : public testing::Test
|
|
{
|
|
public:
|
|
WaterPropsIAPWS water;
|
|
};
|
|
|
|
// See values on p. 395 of Wagner & Pruss.
|
|
TEST_F(WaterPropsIAPWS_Test, triple_point_liquid)
|
|
{
|
|
double T = 273.16;
|
|
double pres = water.psat(T);
|
|
EXPECT_NEAR(pres, 611.655, 2e-3);
|
|
EXPECT_NEAR(water.density(T, pres, WATER_LIQUID), 999.793, 2e-3);
|
|
EXPECT_NEAR(water.intEnergy(), 0.0, 5e-7);
|
|
EXPECT_NEAR(water.entropy(), 0.0, 5e-9);
|
|
EXPECT_NEAR(water.enthalpy(), 11.0214, 2e-4);
|
|
EXPECT_NEAR(water.Gibbs(), 11.0214, 2e-4);
|
|
EXPECT_NEAR(water.cv(), 75978.2, 2e-1);
|
|
EXPECT_NEAR(water.cp(), 76022.8, 2e-1);
|
|
}
|
|
|
|
TEST_F(WaterPropsIAPWS_Test, triple_point_gas)
|
|
{
|
|
double T = 273.16;
|
|
double pres = water.psat(T);
|
|
EXPECT_NEAR(water.density(T, pres, WATER_GAS), 4.85458e-3, 2e-8);
|
|
EXPECT_NEAR(water.intEnergy(), 4.27848e7, 2e2);
|
|
EXPECT_NEAR(water.entropy(), 164939., 2e0);
|
|
EXPECT_NEAR(water.enthalpy(), 4.50547e7, 2e2);
|
|
EXPECT_NEAR(water.Gibbs(), 11.0214, 2e-4);
|
|
EXPECT_NEAR(water.cv(), 25552.6, 2e-1);
|
|
EXPECT_NEAR(water.cp(), 33947.1, 2e-1);
|
|
}
|