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Adding test suite coverage for critcal property lookups in RedlichKwongMFTP

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Steven DeCaluwe 2017-06-29 10:33:21 -06:00 • committed by Ray Speth
parent 68a89d0322
commit 0257c4868e
2 changed files with 46 additions and 0 deletions
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23
test/data/co2_RK_lookup.cti Normal file
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@ -0,0 +1,23 @@
units(length = "cm", time = "s", quantity = "mol", act_energy = "cal/mol")
# Create an instance of the phase where one or more pureFluidParamters inputs are missing.
# This tests the ability to lookup critical properties in the database critProperties.xml:
RedlichKwongMFTP(name = "carbondioxide",
elements = " C O H N ",
species = """ gri30: CO2 H2O H2 CO CH4 O2 N2 """,
activity_coefficients = (
pureFluidParameters(species="H2O", a_coeff = [1.7458E13, -8.0E9], b_coeff = 18.18),
pureFluidParameters(species="H2" , a_coeff = [1.37191E11, 0], b_coeff = 17.64),
pureFluidParameters(species="CO", a_coeff = [1.7226E12, 0], b_coeff = 27.42),
pureFluidParameters(species="CH4", a_coeff = [3.22224E12, 0], b_coeff = 29.848),
pureFluidParameters(species="O2", a_coeff = [1.741E12, 0], b_coeff = 22.081),
crossFluidParameters(species="CO2 H2O", a_coeff = [7.897e12, 0])
),
transport = "Multi",
initial_state = state(
temperature = 300.0,
pressure = OneAtm,
mole_fractions = 'CO2:0.99, H2:0.01'
)
)

23
test/thermo/RedlichKwongMFTP_Test.cpp
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@ -165,4 +165,27 @@ TEST_F(RedlichKwongMFTP_Test, setTP)
EXPECT_NEAR(test_phase->density(),p3[i],1.e-8);
}
}
TEST_F(RedlichKwongMFTP_Test, critPropLookup)
{
// Check to make sure that RedlichKwongMFTP is able to properly calculate a and b
// pureFluidParameters based on tabulated critical properties
test_phase.reset(newPhase("../data/co2_RK_lookup.cti"));
// Check that the critical properties (temperature and pressure) are calculated correctly for
// pure fluids, both for those with pureFluidParameters provided in the cti file (i.e., h2) and
// those where the pureFluidParameters are calculated based on the tabulated critical properties
// (i.e. co2):
// CO2 - should match tabulated values in critProperties.xml
set_r(1.0);
EXPECT_DOUBLE_EQ(test_phase->critTemperature(), 304.2);
EXPECT_DOUBLE_EQ(test_phase->critPressure(), 7390000);
// H2
set_r(0.0);
EXPECT_NEAR(test_phase->critTemperature(), 33.001, 1.e-3);
EXPECT_NEAR(test_phase->critPressure(), 1347700, 100);
}
};