import numpy as np import pytest import openpnm as op class MixtureTest: def setup_class(self): ws = op.Workspace() ws.clear() def test_init_binary_gas(self): net = op.network.Demo() N2 = op.phase.Species(network=net, species='N2', name='pure_N2') O2 = op.phase.Species(network=net, species='O2', name='pure_O2') air = op.phase.BinaryGas(network=net, components=[N2, O2], name='air') def test_liquid_mixture_two_comps(self): net = op.network.Demo() A = op.phase.StandardLiquid(network=net, species='ethanol') B = op.phase.StandardLiquid(network=net, species='H2O') vodka = op.phase.LiquidMixture(network=net, components=[A, B]) vodka.x(A.name, 0.4) vodka.x(B.name, 0.6) assert len(vodka.components) == 2 def test_standard_liquid_mixture(self): net = op.network.Demo() A = op.phase.StandardLiquid(network=net, species='ethanol') B = op.phase.StandardLiquid(network=net, species='H2O') vodka = op.phase.StandardLiquidMixture(network=net, components=[A, B]) vodka.x(A.name, 0.4) vodka.x(B.name, 0.6) # Ensure models are NOT run during init (no point without mol fracs) m = vodka.models.keys() for item in m: assert item.split('@')[0] not in vodka.keys() # Make sure models run without complaining vodka.regenerate_models() # Make sure all models were actually run m = vodka.models.keys() for item in m: assert item.split('@')[0] in vodka.keys() vodka.add_model(propname='pore.diffusivity', model=op.models.phase.diffusivity.liquid_mixture_tc) def test_standard_gas_mixture(self): net = op.network.Demo() A = op.phase.StandardGas(network=net, species='O2') B = op.phase.StandardGas(network=net, species='N2') air = op.phase.StandardGasMixture(network=net, components=[A, B]) air.y(A.name, 0.21) air.y(B.name, 0.79) # Ensure models are NOT run during init (no point without mol fracs) m = air.models.keys() for item in m: assert item.split('@')[0] not in air.keys() # Make sure models run without complaining air.regenerate_models() # Make sure all models were actually run m = air.models.keys() for item in m: assert item.split('@')[0] in air.keys() air.add_model(propname='pore.diffusivity', model=op.models.phase.diffusivity.gas_mixture_ce) def test_add_and_remove_component_method(self): net = op.network.Demo() o2 = op.phase.Species(network=net, species='O2', name='pure_O2') n2 = op.phase.Species(network=net, species='N2', name='pure_N2') air = op.phase.GasMixture(network=net, components=[n2, o2]) air.remove_comp(n2) assert len(air.components) == 1 air.remove_comp(o2) assert len(air.components) == 0 def test_check_health(self): net = op.network.Demo() o2 = op.phase.Species(network=net, species='O2', name='pure_O2') n2 = op.phase.Species(network=net, species='N2', name='pure_N2') air = op.phase.GasMixture(network=net, components=[n2, o2]) air['pore.mole_fraction.pure_N2'] = 0.79 air['pore.mole_fraction.pure_O2'] = 0.21 h = air.check_mixture_health() assert h.health is True air['pore.mole_fraction.pure_O2'] = 0.25 h = air.check_mixture_health() assert h.health is False def test_getitem(self): net = op.network.Demo() o2 = op.phase.Species(network=net, species='O2', name='pure_O2') n2 = op.phase.Species(network=net, species='N2', name='pure_N2') air = op.phase.GasMixture(network=net, components=[n2, o2]) d = air['pore.mole_fraction'] set_a = set(['pure_N2', 'pure_O2']) assert set_a.difference(set(d.keys())) == set() def test_getitem_with_species(self): net = op.network.Demo() o2 = op.phase.StandardGas(network=net, species='O2', name='pure_O2') n2 = op.phase.StandardGas(network=net, species='N2', name='pure_N2') air = op.phase.GasMixture(network=net, components=[n2, o2]) mu1 = air['pore.viscosity.pure_N2'] mu2 = air['pore.viscosity.pure_O2'] assert not np.all(mu1 == mu2) def test_get_comp(self): net = op.network.Demo() o2 = op.phase.StandardGas(network=net, species='O2', name='pure_O2') n2 = op.phase.StandardGas(network=net, species='N2', name='pure_N2') air = op.phase.GasMixture(network=net, components=[n2, o2]) del o2['pore.viscosity'] _ = air['pore.viscosity.pure_N2'] with pytest.raises(KeyError): _ = air['pore.viscosity.pure_O2'] def test_get_mix_vals(self): net = op.network.Demo() o2 = op.phase.StandardGas(network=net, species='O2', name='pure_O2') n2 = op.phase.StandardGas(network=net, species='N2', name='pure_N2') air = op.phase.GasMixture(network=net, components=[n2, o2]) mu1 = air.get_mix_vals('pore.viscosity') # Mole fraction weighting won't work without mole fractions assert np.all(np.isnan(mu1)) air.y(o2.name, 0.5) air.y(n2.name, 0.5) mu2 = air.get_mix_vals('pore.viscosity') assert np.all(np.isreal(mu2)) # Assert each method works and returns something different mu3 = air.get_mix_vals('pore.viscosity', mode='logarithmic') mu4 = air.get_mix_vals('pore.viscosity', mode='power', power=2) assert not np.all(mu2 == mu3) assert not np.all(mu3 == mu4) assert not np.all(mu2 == mu4) def test_regenerate_components(self): net = op.network.Demo() o2 = op.phase.StandardGas(network=net, species='O2', name='pure_O2') n2 = op.phase.StandardGas(network=net, species='N2', name='pure_N2') air = op.phase.StandardGasMixture(network=net, components=[n2, o2]) air.y(o2.name, y=0.2) air.y(n2.name, y=0.8) air.regenerate_models() mu1 = air['pore.viscosity'].mean() o2['pore.temperature'] = 333.3 air.regenerate_models() mu2 = air['pore.viscosity'].mean() assert mu2 > mu1 o2['pore.temperature'] = 298.0 o2.regenerate_models() mu3 = air['pore.viscosity'].mean() assert mu2 == mu3 air.regenerate_models() mu4 = air['pore.viscosity'].mean() assert mu4 == mu1 if __name__ == '__main__': t = MixtureTest() self = t t.setup_class() for item in t.__dir__(): if item.startswith('test'): print(f"Running test: {item}") t.__getattribute__(item)()