def test_solve():
chem = chemkin("tests/test_xml/rxns.xml")
y0 = np.ones(len(chem.species))
T = 300
t1 = 0.003
dt = 5e-4
cs = ChemSolver(chem).solve(y0, T, t1, dt, algorithm='lsoda')
t, y, rr = cs.get_results(return_reaction_rate=False)
assert rr is None
t, y, rr = cs.get_results()
print(y)
def test_IO():
chem = chemkin("tests/test_xml/rxns.xml")
y0 = np.ones(len(chem.species))
T = 300
t1 = 0.003
dt = 5e-4
cs = ChemSolver(chem).solve(y0, T, t1, dt, algorithm='lsoda')
cs.save_results('tests/test_data/test.csv')
cs.save_results('tests/test_data/test.h5')
cs1 = ChemSolver(chem).load_results('tests/test_data/test.csv')
cs2 = ChemSolver(chem).load_results('tests/test_data/test.h5')
assert str(cs.get_results()) == str(cs1.get_results())
assert str(cs1.get_results()) == str(cs2.get_results())
def test_reversible():
x_init = np.ones(8)
T = 1000
# integration end time
t_max = 5.e-13
# step size
dt = 1.e-16
cs = ChemSolver(chemkin('tests/test_xml/rxns_reversible.xml')).solve(
x_init, T, t_max, dt)
assert not cs.is_equilibrium()
t, y, rr = cs.get_results(return_reaction_rate=False)
assert rr is None
t, y, rr = cs.get_results()
assert rr is not None
print(y)
def test_ODE_not_solved():
chem = chemkin("tests/test_xml/rxns.xml")
cs = ChemSolver(chem)
try:
t, y, rr = cs.get_results()
except ValueError as e:
assert type(e) == ValueError
print(e)
try:
cs.save_results('tests/test_data/test.csv')
except ValueError as e:
assert type(e) == ValueError
print(e)
def test_simpleIO():
chem2 = chemkin("tests/test_xml/rxns_reversible.xml")
# initial concentration
x_init = np.ones(8)
T = 2000
t_final = 3.e-13
t_step = 1.e-16
cs = ChemSolver(chem2).solve(x_init, T, t_final, t_step, algorithm='lsoda')
r1 = cs.get_results()
simpleIO('tests/test_data/test.pkl').to_pickle(cs)
cs2 = simpleIO('tests/test_data/test.pkl').read_pickle()
r2 = cs2.get_results()
for i in range(len(r1)):
assert np.any(r1[i] == r2[i])
assert repr(cs.chem) == repr(cs2.chem)
import pandas
import numpy as np
from pychemkin import chemkin, ChemSolver, ChemViz, simpleIO
T = 1000
x_init = np.ones(8) #initial concentration
t_max = 5.e-13 #integration end time in seconds
dt = 1.e-16 #step size in seconds
cs = ChemSolver(chemkin('rxns_reversible.xml'))
cs.solve(x_init, T, t_max, dt, algorithm='vode', method='bdf', nsteps=500)
time_array, conc_array, rxnrate_array = cs.get_results()
df = cs.to_df()
cs.save_results('simulationdata.csv')
cv = ChemViz(cs)
cv.plot_time_series('concentration',
tmin=0,
tmax=4.5e-13,
species=['H', 'OH', 'O2', 'H2O'],
outputfile='modeldocfig1.png')
cv.plot_time_series('reactionrate',
tmin=1.e-13,
tmax=4.5e-13,
outputfile='modeldocfig2.png')
cv.plot_network([0, 1.5e-13, 3e-13],
figsize=(8, 15),
outputfile='modeldocfig3.png')