def test_point_water_08():
assert not point_in_function(
(Q_('270 K'), Q_('44150144.529 Pa')), water._clapeyron_sl)
def physical_state(self, point):
"""
Returns the physical state for a given point(temperature, pressure)
Parameters
----------
point
tuple with temperature and pressure
Returns
-------
string
physical state
"""
state = ''
clapeyron_sv = partial(self._clapeyron_sv_lv, curve='sv')
# triple point temperature
if point[0] == self.triple_point[0]:
if point[1] < self.triple_point[1]:
state = 'vapour'
else:
if self.volume_change_fusion < 0:
state = 'liquid'
else:
state = 'solid'
# critical point temperature
elif point[0] == self.critical_point[0]:
if point[1] < self.critical_point[1]:
state = 'vapour'
else:
state = 'liquid'
# point on curve
elif point_in_function(point, self._antoine_lv):
state = 'liquid-vapour curve'
elif point_in_function(point, self._clapeyron_sl):
state = 'solid-liquid curve'
elif point_in_function(point, clapeyron_sv):
state = 'solid-vapour curve'
# regions
elif point[0] > self.critical_point.temperature:
if point[1] > self.critical_point.pressure:
state = 'supercritical fluid'
else:
state = 'gas'
elif (point[0] > self.triple_point.temperature) and (
point[1] < self._antoine_lv(point[0])):
state = 'vapour'
elif (point[0] < self.triple_point.temperature) and (
point[1] < self._clapeyron_sv_lv(point[0], curve='sv')):
state = 'vapour'
elif self.volume_change_fusion > 0:
if (point[0] < self.triple_point.temperature) and (
point[1] > self._clapeyron_sv_lv(point[0], curve='sv')):
state = 'solid'
else:
state = 'liquid'
elif self.volume_change_fusion < 0:
if (point[0] < self.triple_point.temperature) and (
point[1] > self._clapeyron_sv_lv(point[0], curve='sv')):
state = 'solid'
else:
state = 'liquid'
return state
def test_point_water_06():
assert not point_in_function(
(Q_('200 K'), Q_('0.877 Pa')), water_clapeyron_lv)
def test_point_water_04():
assert not point_in_function(
(Q_('100 K'), Q_('1.64e-3 Pa')), water_clapeyron_sv)
def test_point_water_02():
assert not point_in_function(
(Q_('400 K'), Q_('246493.813 Pa')), water._antoine_lv)
def test_point_not_in_straight_line_function_tolerance():
assert not point_in_function((Q_('3 m'), Q_('3.002 m')), straight_line_y)
def test_point_not_in_straight_line_function():
assert not point_in_function((Q_('3 m'), Q_('4 m')), straight_line_y)