def reinitialize_flow_field(self,
wind_speed=None,
wind_direction=None,
wind_shear=None,
wind_veer=None,
turbulence_intensity=None,
air_density=None,
wake=None,
layout_array=None,
with_resolution=None):
"""
Wrapper to
:py:meth:`floris.simlulation.flow_field.reinitialize_flow_field`.
All input values are used to update the flow_field instance.
Args:
wind_speed (float, optional): background wind speed.
Defaults to None.
wind_direction (float, optional): background wind direction.
Defaults to None.
wind_shear (float, optional): shear exponent.
Defaults to None.
wind_veer (float, optional): direction change over rotor.
Defaults to None.
turbulence_intensity (float, optional): background turbulence intensity. Defaults to None.Defaults to None.
(float, optional): ambient air density.
Defaults to None.
wake (str, optional): wake model type. Defaults to None.
layout_array (np.array, optional): array of x- and
y-locations of wind turbines. Defaults to None.
with_resolution (float, optional): resolution of output
flow_field. Defaults to None.
"""
# Build turbine map (convenience layer for user)
if layout_array is not None:
turbine_map = TurbineMap(
layout_array[0], layout_array[1], \
[copy.deepcopy(self.floris.farm.turbines[0]) \
for ii in range(len(layout_array[0]))])
else:
turbine_map = None
self.floris.farm.flow_field.reinitialize_flow_field(
wind_speed=wind_speed,
wind_direction=wind_direction,
wind_shear=wind_shear,
wind_veer=wind_veer,
turbulence_intensity=turbulence_intensity,
air_density=air_density,
wake=wake,
turbine_map=turbine_map,
with_resolution=with_resolution)
def _build_input_dict(self):
wake = Wake(self.sample_inputs.wake)
turbine = Turbine(self.sample_inputs.turbine)
turbine_map = TurbineMap(
[0.0, 100.0], [0.0, 0.0],
[copy.deepcopy(turbine),
copy.deepcopy(turbine)])
return {
"wind_direction": 270.0,
"wind_speed": 8.0,
"wind_shear": 0.0,
"wind_veer": 0.0,
"turbulence_intensity": 1.0,
"air_density": 1.225,
"wake": wake,
"turbine_map": turbine_map
}
def test_regression_rotation():
"""
Turbines in tandem and rotated.
The result from 270 degrees should match the results from 360 degrees.
"""
test_class = JensenJimenezRegressionTest()
floris = Floris(input_dict=test_class.input_dict)
fresh_turbine = copy.deepcopy(floris.farm.turbine_map.turbines[0])
### unrotated
floris.farm.flow_field.calculate_wake()
turbine = floris.farm.turbine_map.turbines[0]
unwaked_baseline = (turbine.Cp, turbine.Ct, turbine.power,
turbine.aI, turbine.average_velocity)
turbine = floris.farm.turbine_map.turbines[1]
waked_baseline = (turbine.Cp, turbine.Ct, turbine.power,
turbine.aI, turbine.average_velocity)
### rotated
new_map = TurbineMap(
[0.0, 0.0],
[5 * test_class.input_dict["turbine"]["properties"]["rotor_diameter"], 0.0],
[copy.deepcopy(fresh_turbine), copy.deepcopy(fresh_turbine)]
)
floris.farm.flow_field.reinitialize_flow_field(
wind_direction=360,
turbine_map=new_map
)
floris.farm.flow_field.calculate_wake()
turbine = floris.farm.turbine_map.turbines[0]
assert pytest.approx(turbine.Cp) == unwaked_baseline[0]
assert pytest.approx(turbine.Ct) == unwaked_baseline[1]
assert pytest.approx(turbine.power) == unwaked_baseline[2]
assert pytest.approx(turbine.aI) == unwaked_baseline[3]
assert pytest.approx(turbine.average_velocity) == unwaked_baseline[4]
turbine = floris.farm.turbine_map.turbines[1]
assert pytest.approx(turbine.Cp) == waked_baseline[0]
assert pytest.approx(turbine.Ct) == waked_baseline[1]
assert pytest.approx(turbine.power) == waked_baseline[2]
assert pytest.approx(turbine.aI) == waked_baseline[3]
assert pytest.approx(turbine.average_velocity) == waked_baseline[4]
def flow_field_fixture(sample_inputs_fixture):
wake = Wake(sample_inputs_fixture.wake)
turbine = Turbine(sample_inputs_fixture.turbine)
turbine_map = TurbineMap(
[0.0, 100.0], [0.0, 0.0], [copy.deepcopy(turbine), copy.deepcopy(turbine)]
)
farm_prop = sample_inputs_fixture.farm["properties"]
wind_map = WindMap(
wind_speed=farm_prop["wind_speed"],
layout_array=(farm_prop["layout_x"], farm_prop["layout_y"]),
wind_layout=(farm_prop["wind_x"], farm_prop["wind_y"]),
turbulence_intensity=farm_prop["turbulence_intensity"],
wind_direction=farm_prop["wind_direction"],
)
return FlowField(
farm_prop["wind_shear"],
farm_prop["wind_veer"],
farm_prop["air_density"],
wake,
turbine_map,
wind_map,
farm_prop["specified_wind_height"],
)
def _build_instance(self):
return TurbineMap(self.coordinates[0], self.coordinates[1], self.turbines)
def test_regression_rotation(sample_inputs_fixture):
"""
Turbines in tandem and rotated.
The result from 270 degrees should match the results from 360 degrees.
"""
sample_inputs_fixture.floris["wake"]["properties"][
"velocity_model"
] = VELOCITY_MODEL
sample_inputs_fixture.floris["wake"]["properties"][
"deflection_model"
] = DEFLECTION_MODEL
floris = Floris(input_dict=sample_inputs_fixture.floris)
fresh_turbine = copy.deepcopy(floris.farm.turbine_map.turbines[0])
wind_map = floris.farm.wind_map
# unrotated
floris.farm.flow_field.calculate_wake()
turbine = floris.farm.turbine_map.turbines[0]
unwaked_baseline = (
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
)
turbine = floris.farm.turbine_map.turbines[1]
first_waked_baseline = (
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
)
turbine = floris.farm.turbine_map.turbines[2]
second_waked_baseline = (
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
)
# rotated
wind_map.input_direction = [360]
wind_map.calculate_wind_direction()
new_map = TurbineMap(
[0.0, 0.0, 0.0],
[
10
* sample_inputs_fixture.floris["turbine"]["properties"]["rotor_diameter"],
5 * sample_inputs_fixture.floris["turbine"]["properties"]["rotor_diameter"],
0.0,
],
[
copy.deepcopy(fresh_turbine),
copy.deepcopy(fresh_turbine),
copy.deepcopy(fresh_turbine),
],
)
floris.farm.flow_field.reinitialize_flow_field(
turbine_map=new_map, wind_map=wind_map
)
floris.farm.flow_field.calculate_wake()
turbine = floris.farm.turbine_map.turbines[0]
assert approx(turbine.Ct) == unwaked_baseline[0]
assert approx(turbine.power) == unwaked_baseline[1]
assert approx(turbine.aI) == unwaked_baseline[2]
assert approx(turbine.average_velocity) == unwaked_baseline[3]
turbine = floris.farm.turbine_map.turbines[1]
assert approx(turbine.Ct) == first_waked_baseline[0]
assert approx(turbine.power) == first_waked_baseline[1]
assert approx(turbine.aI) == first_waked_baseline[2]
assert approx(turbine.average_velocity) == first_waked_baseline[3]
turbine = floris.farm.turbine_map.turbines[2]
assert approx(turbine.Ct, rel=1e-5) == second_waked_baseline[0]
assert approx(turbine.power, rel=1e-5) == second_waked_baseline[1]
assert approx(turbine.aI, rel=1e-5) == second_waked_baseline[2]
assert approx(turbine.average_velocity, rel=1e-5) == second_waked_baseline[3]
def test_regression_rotation():
"""
Turbines in tandem and rotated.
The result from 270 degrees should match the results from 360 degrees.
"""
test_class = CurlRegressionTest()
floris = Floris(input_dict=test_class.input_dict)
fresh_turbine = copy.deepcopy(floris.farm.turbine_map.turbines[0])
wind_map = floris.farm.wind_map
### unrotated
floris.farm.flow_field.calculate_wake()
turbine = floris.farm.turbine_map.turbines[0]
unwaked_baseline = (
turbine.Cp,
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
)
turbine = floris.farm.turbine_map.turbines[1]
first_waked_baseline = (
turbine.Cp,
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
)
turbine = floris.farm.turbine_map.turbines[2]
second_waked_baseline = (
turbine.Cp,
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
)
### rotated
wind_map.input_direction = [360]
wind_map.calculate_wind_direction()
new_map = TurbineMap(
[0.0, 0.0, 0.0],
[
10 *
test_class.input_dict["turbine"]["properties"]["rotor_diameter"],
5 *
test_class.input_dict["turbine"]["properties"]["rotor_diameter"],
0.0,
],
[
copy.deepcopy(fresh_turbine),
copy.deepcopy(fresh_turbine),
copy.deepcopy(fresh_turbine),
],
)
floris.farm.flow_field.reinitialize_flow_field(turbine_map=new_map,
wind_map=wind_map)
floris.farm.flow_field.calculate_wake()
turbine = floris.farm.turbine_map.turbines[0]
if test_class.debug:
print("({:.7f}, {:.7f}, {:.7f}, {:.7f}, {:.7f})".format(
turbine.Cp,
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
))
assert pytest.approx(turbine.Cp) == unwaked_baseline[0]
assert pytest.approx(turbine.Ct) == unwaked_baseline[1]
assert pytest.approx(turbine.power) == unwaked_baseline[2]
assert pytest.approx(turbine.aI) == unwaked_baseline[3]
assert pytest.approx(turbine.average_velocity) == unwaked_baseline[4]
turbine = floris.farm.turbine_map.turbines[1]
if test_class.debug:
print("({:.7f}, {:.7f}, {:.7f}, {:.7f}, {:.7f})".format(
turbine.Cp,
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
))
assert pytest.approx(turbine.Cp) == first_waked_baseline[0]
assert pytest.approx(turbine.Ct) == first_waked_baseline[1]
assert pytest.approx(turbine.power) == first_waked_baseline[2]
assert pytest.approx(turbine.aI) == first_waked_baseline[3]
assert pytest.approx(turbine.average_velocity) == first_waked_baseline[4]
turbine = floris.farm.turbine_map.turbines[2]
if test_class.debug:
print("({:.7f}, {:.7f}, {:.7f}, {:.7f}, {:.7f})".format(
turbine.Cp,
turbine.Ct,
turbine.power,
turbine.aI,
turbine.average_velocity,
))
# TODO: this is a hack and you know it :(
assert pytest.approx(turbine.Cp, rel=1e-4) == second_waked_baseline[0]
assert pytest.approx(turbine.Ct, rel=1e-4) == second_waked_baseline[1]
assert pytest.approx(turbine.power, rel=1e-3) == second_waked_baseline[2]
assert pytest.approx(turbine.aI, rel=1e-3) == second_waked_baseline[3]
assert pytest.approx(turbine.average_velocity,
rel=1e-3) == second_waked_baseline[4]
def turbine_map_fixture(sample_inputs_fixture):
return TurbineMap(
sample_inputs_fixture.farm["properties"]["layout_x"],
sample_inputs_fixture.farm["properties"]["layout_y"],
3 * [Turbine(sample_inputs_fixture.turbine)],
)
