def setUp(self):
self.nn = 5
self.length = 3
self.sf = -2
self.p = Problem(model=Group())
ivc = IndepVarComp()
ivc.add_output(name='a', shape=(self.nn, self.length))
self.p.model.add_subsystem(name='ivc',
subsys=ivc,
promotes_outputs=['a'])
multi = self.p.model.add_subsystem(name='sum_comp',
subsys=SumComp(axis=None))
multi.add_equation('sum_output',
'sum_input',
vec_size=self.nn,
length=self.length,
scaling_factor=self.sf)
self.p.model.connect('a', 'sum_comp.sum_input')
self.p.setup(force_alloc_complex=True)
self.p['a'] = np.random.rand(self.nn, self.length)
self.p.run_model()
def setUp(self):
self.nn = 5
self.length = 3
self.p = Problem(model=Group())
ivc = IndepVarComp()
ivc.add_output(name='a', shape=(self.nn, self.length), units='m')
ivc.add_output(name='b', shape=(self.nn, self.length), units='kg')
self.p.model.add_subsystem(name='ivc',
subsys=ivc,
promotes_outputs=['a', 'b'])
multi = self.p.model.add_subsystem(name='sum_comp', subsys=SumComp())
multi.add_equation('sum_output1',
'sum_input_a',
vec_size=self.nn,
length=self.length,
units='m')
multi.add_equation('sum_output2',
'sum_input_b',
vec_size=self.nn,
length=self.length,
units='kg')
self.p.model.connect('a', 'sum_comp.sum_input_a')
self.p.model.connect('b', 'sum_comp.sum_input_b')
self.p.setup(force_alloc_complex=True)
self.p['a'] = np.random.rand(self.nn, self.length)
self.p['b'] = np.random.rand(self.nn, self.length)
self.p.run_model()
def test(self):
"""
A simple example to compute total fuel burn over an aircraft mission
"""
import numpy as np
#from openmdao.api import Problem, Group, IndepVarComp
from openconcept.utilities.math.sum_comp import SumComp
from openmdao.utils.assert_utils import assert_near_equal
n = 10
length = 1
p = Problem(model=Group())
ivc = IndepVarComp()
#the vector represents fuel burns over several mission segments
ivc.add_output(name='fuel_burn_by_seg', shape=(n, ), units='kg')
p.model.add_subsystem(name='ivc',
subsys=ivc,
promotes_outputs=['fuel_burn_by_seg'])
# construct a summation component here
# axis=0 sums along the vector
total = SumComp(axis=0)
total.add_equation('total_fuel',
'fuel_burn_by_seg',
vec_size=n,
units='kg')
p.model.add_subsystem(name='totalfuelcomp',
subsys=total,
promotes_inputs=['*'])
p.setup()
# create a vector of fuel burns
p['fuel_burn_by_seg'] = np.random.uniform(low=20, high=30, size=(n, ))
p.run_model()
# print(p.get_val('totalforcecomp.total_force', units='kN'))
# Verify the results
expected_i = np.sum(p['fuel_burn_by_seg'], axis=0)
expected_i = expected_i.reshape((1, ))
assert_near_equal(p.get_val('totalfuelcomp.total_fuel', units='kg'),
expected_i)
def setUp(self):
self.nn = 5
self.length = 3
self.p = Problem(model=Group())
ivc = IndepVarComp()
ivc.add_output(name='a', shape=(self.nn, self.length))
self.p.model.add_subsystem(name='ivc',
subsys=ivc,
promotes_outputs=['a'])
multi = self.p.model.add_subsystem(name='sum_comp',
subsys=SumComp(axis=2))
multi.add_equation('sum_output',
'sum_input',
vec_size=self.nn,
length=self.length)
self.p.model.connect('a', 'sum_comp.sum_input')
def setUp(self):
self.nn = 1
self.p = Problem(model=Group())
ivc = IndepVarComp()
ivc.add_output(name='a', shape=(self.nn, ))
self.p.model.add_subsystem(name='ivc',
subsys=ivc,
promotes_outputs=['a'])
multi = self.p.model.add_subsystem(name='sum_comp', subsys=SumComp())
multi.add_equation('sum_output', 'sum_input')
self.p.model.connect('a', 'sum_comp.sum_input')
self.p.setup(force_alloc_complex=True)
self.p['a'] = np.random.rand(self.nn, )
self.p.run_model()
