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import numpy as np
from numpy.testing import assert_allclose
import openpnm as op
from openpnm.models.misc import constant
class MultiPhaseTest:
def setup_class(self):
self.net = op.network.Cubic(shape=[10, 10, 10])
self.water = op.phase.Water(network=self.net, name="water")
self.air = op.phase.Air(network=self.net, name="air")
self.oil = op.phase.Water(network=self.net, name="oil")
def test_multiphase_init(self):
phases = [self.air, self.water]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
assert_allclose(m['pore.occupancy.air'], 0)
assert_allclose(m['throat.occupancy.water'], 0)
assert self.air.name in m.settings['phases']
assert self.water.name in m.settings['phases']
def test_multiphase_no_occupancy_yet(self):
phases = [self.air, self.water]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
self.water['pore.temperature'] = 300.0
assert_allclose(m['pore.temperature'], 0)
def test_multiphase_set_occupancy_w_indices_only(self):
phases = [self.air, self.water]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
Ps_water = np.array([0, 1, 2])
Ps_water_mask = self.net.to_mask(pores=Ps_water)
Ts_water = np.array([4, 12, 22])
Ts_water_mask = self.net.to_mask(throats=Ts_water)
m.set_occupancy(self.water, pores=Ps_water)
m.set_occupancy(self.water, throats=Ts_water)
assert_allclose(m["pore.occupancy.water"][Ps_water_mask], 1)
assert_allclose(m["pore.occupancy.water"][~Ps_water_mask], 0)
assert_allclose(m["throat.occupancy.water"][Ts_water_mask], 1)
assert_allclose(m["throat.occupancy.water"][~Ts_water_mask], 0)
def test_multiphase_set_occupancy_w_values_only(self):
phases = [self.air, self.water]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
Pvals = np.array([0.5, 0.9, 0.01])
Tvals = np.array([0.9, 0.01])
# Set pore occupancy
m.set_occupancy(self.water, pores=m.Ps, values=1)
assert_allclose(m["pore.occupancy.water"], 1)
Pvals = np.ones(self.net.Np) * 0.5
m.set_occupancy(self.water, pores=m.Ps, values=Pvals)
assert_allclose(m["pore.occupancy.water"], 0.5)
# Setting throat occupancy
m.set_occupancy(self.water, throats=m.Ts, values=1)
assert m["throat.occupancy.water"].mean() == 1
Tvals = np.ones(self.net.Nt) * 0.54
m.set_occupancy(self.water, throats=m.Ts, values=Tvals)
assert m["throat.occupancy.water"].mean() == 0.54
def test_multiphase_set_occupancy_w_pore_indices_and_Pvals(self):
phases = [self.air, self.water]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
Ps_water = np.array([0, 1, 2])
Pvals = np.array([0.5, 0.9, 0.01])
Ps_water_mask = self.net.to_mask(Ps_water)
Ts_water = np.array([4, 12, 22])
Ts_water_mask = self.net.to_mask(throats=Ts_water)
Tvals = np.array([0.3, 0.4, 0.1])
# Pvals/Tvals and pores/throats; same array length
m.set_occupancy(self.water, pores=Ps_water, values=Pvals)
m.set_occupancy(self.water, throats=Ts_water, values=Tvals)
assert_allclose(m["pore.occupancy.water"][Ps_water], Pvals)
assert_allclose(m["throat.occupancy.water"][Ts_water], Tvals)
assert_allclose(m["pore.occupancy.water"][~Ps_water_mask], 0)
assert_allclose(m["throat.occupancy.water"][~Ts_water_mask], 0)
# Pvals and pores; inconsistent size
with pytest.raises(Exception):
m.set_occupancy(self.water, pores=[1, 5, 10], values=[0.5, 0])
# Tvals and throats; inconsistent size
with pytest.raises(Exception):
m.set_occupancy(self.water, throats=[10, 52, 0], values=[0.5, 0.01])
# Pvals/Tvals.size = 1 and pores/throats.size > 1
m.set_occupancy(phase=self.water, pores=Ps_water, values=0.25)
m.set_occupancy(phase=self.water, throats=Ts_water, values=0.23)
assert_allclose(m["pore.occupancy.water"][Ps_water], 0.25)
assert_allclose(m["throat.occupancy.water"][Ts_water], 0.23)
def test_multiphase_automatic_throat_occupancy(self):
m = op.contrib.MultiPhase(network=self.net, phases=[self.air, self.water])
pores = np.random.choice(self.net.Ps, size=100, replace=False)
Pvals = np.random.random(pores.size)
m.set_occupancy(self.water, pores=pores, values=Pvals)
P1, P2 = self.net["throat.conns"].T
oc1, oc2 = [m["pore.occupancy.water"][x] for x in (P1, P2)]
# Throats take average occupancy of adjacent pores
m._set_automatic_throat_occupancy(mode="mean")
assert_allclose(m["throat.occupancy.water"], np.mean([oc1, oc2], axis=0))
# Throats take maximum occupancy of adjacent pores
m._set_automatic_throat_occupancy(mode="max")
assert_allclose(m["throat.occupancy.water"], np.maximum(oc1, oc2))
# Throats take minimum occupancy of adjacent pores
m._set_automatic_throat_occupancy(mode="min")
assert_allclose(m["throat.occupancy.water"], np.minimum(oc1, oc2))
def test_multiphase_occupancy_set_single_phase(self):
m = op.contrib.MultiPhase(network=self.net)
self.water['pore.temperature'] = 300
assert np.all(self.water['pore.temperature'] == 300)
m.set_occupancy(phase=self.water, pores=m.Ps, values=1)
m.set_occupancy(phase=self.water, throats=m.Ts, values=1)
assert np.all(m['pore.temperature'] == 300)
def test_multiphase_occupancy_set_two_phase(self):
m = op.contrib.MultiPhase(network=self.net)
self.water['pore.temperature'] = 300
self.air['pore.temperature'] = 200
assert np.all(self.water['pore.temperature'] == 300)
assert np.all(self.air['pore.temperature'] == 200)
Ps = self.net['pore.coords'][:, 0] < 3
Ts = self.net.to_mask(throats=self.net.find_neighbor_throats(Ps))
m.set_occupancy(phase=self.water, pores=Ps, values=1)
m.set_occupancy(phase=self.water, throats=Ts, values=1)
m.set_occupancy(phase=self.air, pores=~Ps, values=1)
m.set_occupancy(phase=self.air, throats=~Ts, values=1)
assert np.all(m['pore.temperature'] >= 200)
assert np.all(m['pore.temperature'] <= 300)
def test_multiphase_partition_coef(self):
phases = [self.water, self.air, self.oil]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
x, y, z = self.net["pore.coords"].T
ps_water = self.net.Ps[(y <= 3) + (y >= 8)]
ps_air = self.net.Ps[(y > 3) * (y < 6)]
ps_oil = self.net.Ps[(y >= 6) * (y < 8)]
# Phase arrangement (y-axis): W | A | O | W
m.set_occupancy(phase=self.water, pores=ps_water)
m.set_occupancy(phase=self.air, pores=ps_air)
m.set_occupancy(phase=self.oil, pores=ps_oil)
K_air_water = 2.0
K_air_oil = 1.8
K_water_oil = 0.73
m.set_binary_partition_coef([self.air, self.water], model=constant, value=K_air_water)
m.set_binary_partition_coef([self.air, self.oil], model=constant, value=K_air_oil)
m.set_binary_partition_coef([self.water, self.oil], model=constant, value=K_water_oil)
K_aw = m["throat.partition_coef.air:water"]
K_ao = m["throat.partition_coef.air:oil"]
K_wo = m["throat.partition_coef.water:oil"]
K_global = m["throat.partition_coef.global"]
assert np.isclose(K_aw.mean(), K_air_water)
assert np.isclose(K_ao.mean(), K_air_oil)
assert np.isclose(K_wo.mean(), K_water_oil)
# Get water-air interface throats
tmp1 = self.net.find_neighbor_throats(ps_water, mode="xor")
tmp2 = self.net.find_neighbor_throats(ps_air, mode="xor")
Ts_water_air = np.intersect1d(tmp1, tmp2)
# Get air-oil interface throats
tmp1 = self.net.find_neighbor_throats(ps_air, mode="xor")
tmp2 = self.net.find_neighbor_throats(ps_oil, mode="xor")
Ts_air_oil = np.intersect1d(tmp1, tmp2)
# Get oil-water interface throats
tmp1 = self.net.find_neighbor_throats(ps_oil, mode="xor")
tmp2 = self.net.find_neighbor_throats(ps_water, mode="xor")
Ts_oil_water = np.intersect1d(tmp1, tmp2)
# K_global for water-air interface must be 1/K_air_water
assert np.isclose(K_global[Ts_water_air].mean(), 1/K_air_water)
# K_global for air-oil interface must be K_air_oil (not 1/K_air_oil)
assert np.isclose(K_global[Ts_air_oil].mean(), K_air_oil)
# K_global for oil-water interface must be 1/K_water_oil
assert np.isclose(K_global[Ts_oil_water].mean(), 1/K_water_oil)
# K_global for single-phase regions must be 1.0
temp = Ts_water_air, Ts_air_oil, Ts_oil_water
interface_throats = np.hstack(temp)
Ts_single_phase = np.setdiff1d(self.net.Ts, interface_throats)
assert np.isclose(K_global[Ts_single_phase].mean(), 1.0)
def test_multiphase_invalid_phase(self):
pn = op.network.Cubic(shape=[3, 3, 3])
water = op.phase.Water(network=pn)
m = op.contrib.MultiPhase(network=self.net)
with pytest.raises(Exception):
m.set_occupancy(phase=water)
def test_multiphase_invalid_occupancy(self):
m = op.contrib.MultiPhase(network=self.net, phases=[self.water, self.air])
m.set_occupancy(phase=self.water, pores=m.Ps, values=1.5)
m.set_occupancy(phase=self.water, throats=m.Ts, values=2.5)
def test_format_interface_prop(self):
phases = [self.water, self.air]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
propname = m._format_interface_prop(propname="throat.foo", phases=phases)
assert propname == "throat.foo.water:air"
def test_get_phases_names(self):
phases = [self.water, self.air]
m = op.contrib.MultiPhase(network=self.net, phases=phases)
names = m._get_phase_labels("throat.foo.air:water")
assert names[0] == "air"
assert names[1] == "water"
def test_assemble_partition_coef_global(self):
# Create network and 3 pure phases
net = op.network.Cubic([6, 1, 1])
air = op.phase.Air(network=net, name="air")
water = op.phase.Water(network=net, name="water")
oil = op.phase.Water(network=net, name="oil")
# Create MultiPhase and set phase occupancies
m = op.contrib.MultiPhase(network=net, phases=[water, air, oil])
m.set_occupancy(air, pores=[0, 1])
m.set_occupancy(water, pores=[2, 3])
m.set_occupancy(oil, pores=[4, 5])
# Check if K_global is initially ones
assert_allclose(m.K, 1.)
# Add binary partition coefficient models
m.set_binary_partition_coef([water, air], model=constant, value=0.7)
m.set_binary_partition_coef([water, oil], model=constant, value=1.1)
# Check if K_global is correctly populated after models were added
assert_allclose(m.K, [1., 1/0.7, 1., 1.1, 1])
if __name__ == '__main__':
t = MultiPhaseTest()
self = t
t.setup_class()
for item in t.__dir__():
if item.startswith('test'):
print(f'Running test: {item}')
t.__getattribute__(item)()
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