def test_finite_line_source_image_part(self, rel_tol=1.0e-6):
""" Tests the value of the image part of the FLS solution.
"""
from pygfunction.boreholes import Borehole
from pygfunction.heat_transfer import finite_line_source
# Evaluate the double integral
reference = dblquad(
fls_double,
self.D1,
self.D1 + self.H1,
lambda x: self.D2,
lambda x: self.D2 + self.H2,
args=(self.t, self.dis, self.alpha, False, True))[0] / self.H2
# Evaluate using heat_transfer.finite_line_source
borehole1 = Borehole(self.H1, self.D1, 0.05, 0., 0.)
borehole2 = Borehole(self.H2, self.D2, 0.05, self.dis, 0.)
calculated = finite_line_source(self.t,
self.alpha,
borehole1,
borehole2,
reaSource=False,
imgSource=True)
self.assertAlmostEqual(calculated,
reference,
delta=np.abs(rel_tol * reference),
msg='Incorrect value of the image part of the '
'finite line source solution.')
def test_finite_line_source_no_part(self, rel_tol=1.0e-6):
""" Tests the value of the FLS solution when considering no source.
"""
from pygfunction.boreholes import Borehole
from pygfunction.heat_transfer import finite_line_source
# Evaluate using heat_transfer.finite_line_source
borehole1 = Borehole(self.H1, self.D1, 0.05, 0., 0.)
borehole2 = Borehole(self.H2, self.D2, 0.05, self.dis, 0.)
calculated = finite_line_source(self.t, self.alpha,
borehole1, borehole2,
reaSource=False, imgSource=False)
self.assertEqual(calculated, 0.,
msg='Incorrect value of no part of the '
'finite line source solution.')