def test_gas_custom_init():
"""Test the initialization of a custom gas."""
co2_gap = EnergyWindowMaterialGasCustom('CO2', 0.0125, 0.0146, 0.000014,
827.73)
co2_gap.specific_heat_ratio = 1.4
co2_gap.molecular_weight = 44
str(co2_gap) # test the string representation of the material
co2_dup = co2_gap.duplicate()
assert co2_gap.name == co2_dup.name == 'CO2'
assert co2_gap.thickness == co2_dup.thickness == 0.0125
assert co2_gap.conductivity == co2_dup.conductivity == pytest.approx(
0.0146, rel=1e-2)
assert co2_gap.viscosity == co2_dup.viscosity == pytest.approx(0.000014,
rel=1e-2)
assert co2_gap.specific_heat == co2_dup.specific_heat == pytest.approx(
827.73, rel=1e-2)
assert co2_gap.density == co2_dup.density == pytest.approx(1.9631,
rel=1e-2)
assert co2_gap.prandtl == co2_dup.prandtl == pytest.approx(0.7937,
rel=1e-2)
assert co2_gap.conductivity_coeff_b == 0
assert co2_gap.conductivity_coeff_c == 0
assert co2_gap.viscosity_coeff_b == 0
assert co2_gap.viscosity_coeff_c == 0
assert co2_gap.specific_heat_coeff_b == 0
assert co2_gap.specific_heat_coeff_c == 0
assert co2_gap.specific_heat_ratio == 1.4
assert co2_gap.molecular_weight == 44
def test_gas_custom_dict_methods():
"""Test the to/from dict methods."""
co2_gap = EnergyWindowMaterialGasCustom('CO2', 0.0125, 0.0146, 0.000014, 827.73)
co2_gap.specific_heat_ratio = 1.4
co2_gap.molecular_weight = 44
material_dict = co2_gap.to_dict()
new_material = EnergyWindowMaterialGasCustom.from_dict(material_dict)
assert material_dict == new_material.to_dict()
def material_window_gas_custom(directory):
co2_gap = EnergyWindowMaterialGasCustom('CO2', 0.0125, 0.0146, 0.000014,
827.73)
co2_gap.specific_heat_ratio = 1.4
co2_gap.molecular_weight = 44
dest_file = os.path.join(directory, 'material_window_gas_custom.json')
with open(dest_file, 'w') as fp:
json.dump(co2_gap.to_dict(), fp, indent=4)
def test_gas_custom_properties_at_temperature():
"""Test the initalization of gas material objects and basic properties."""
co2_gap = EnergyWindowMaterialGasCustom('CO2', 0.0125, 0.0146, 0.000014, 827.73)
co2_gap.specific_heat_ratio = 1.4
co2_gap.molecular_weight = 44
assert co2_gap.conductivity_at_temperature(223) == pytest.approx(0.0146, rel=1e-2)
assert co2_gap.viscosity_at_temperature(223) == pytest.approx(1.4e-05, rel=1e-2)
assert co2_gap.specific_heat_at_temperature(223) == pytest.approx(827.73, rel=1e-2)
assert co2_gap.density_at_temperature(223) == pytest.approx(2.40466, rel=1e-2)
assert co2_gap.prandtl_at_temperature(223) == pytest.approx(0.7937, rel=1e-2)