def test_solar_mu(self):
"""Solar values work for mu(X,Y): X=0.70, Y=0.28, log(T)=6.91, log(P)=16.87"""
X = 0.70
Y = 0.28
logT = 6.91
logP = 16.87
mu = mmw(X=X,Y=Y)
mu_sol = 0.617283950617284
assert mu - mu_sol < 1e-10, u"μ mismatch: %g, %g" % (mu,mu_sol)
def test_solar_mu(self):
"""Solar values work for mu(X,Y): X=0.70, Y=0.28, log(T)=6.91, log(P)=16.87"""
X = 0.70
Y = 0.28
logT = 6.91
logP = 16.87
mu = mmw(X=X, Y=Y)
mu_sol = 0.617283950617284
assert mu - mu_sol < 1e-10, u"μ mismatch: %g, %g" % (mu, mu_sol)
# P_Guess_Iteration = 2
P_Guess_Iteration = 0
Opacity = ObjectThread(OpacityTable,
ikwargs=dict(fkey='GN93hz', X=X, Y=Y),
locking=True)
Opacity.start()
star = Star(config=Config, optable_args=Opacity.duplicator)
print ""
print "Problem #4&5:"
print "Settings for the Sun"
print "M = %10.6g g" % Ms
print "X = %10.3f" % star.X
print "Y = %10.3f" % star.Y
print u"μ = %10.3f" % mmw(X=X, Y=Y)
print ""
print "Outer Boundary Conditions"
print " Inital Guess:"
print " R = %10.6e cm" % Rs
print " L = %10.6e erg/s" % Lsun
r, l, P, T = outer_boundary(R=Rs,
L=Lsun,
M=Ms,
mu=mmw(X=X, Y=Y),
optable=Opacity,
Piter=P_Guess_Iteration)
print "At m=M:"
print " r = %10.6e cm" % r
print " l = %10.6e erg/s" % l
from pystellar.density import ldensity, lbeta, mmw
from pystellar.opacity import OpacityTable
import numpy as np
print "Stellar Structure Problem Set 1"
# Problem #5
print "\nProblem #5:"
Xs = [0, 0.70]
Ys = [0.98, 0.28]
logTs = [7.55, 6.91]
logPs = [16.85, 16.87]
for X, Y, logT, logP in zip(Xs, Ys, logTs, logPs):
mu = mmw(X=X, Y=Y)
beta = lbeta(logT=logT, logP=logP, mu=mu)
dens = ldensity(logT=logT, logP=logP, mu=mu)
print u"For X=%5.3f, Y=%5.3f, log(T)=%5.3f, log(P)=%5.3f\n → μ=%5.3f → ρ=%5.3f, β=%5.3f" % (
X, Y, logT, logP, mu, dens, beta)
# Problem #6
print "\nProblem #6:"
logTs = [6.3, 5.0]
logrhos = [0.3, -4.0]
X = 0.700
Y = 0.280
opacity = OpacityTable("GN93hz", load=True)
opacity.composition(X=X, Y=Y)
print u"Fixed composition at X=%.3g,Y=%.3g,Z=%.3g" % (opacity.X, opacity.Y,
Config = DottedConfiguration()
Config.dn = DottedConfiguration
Config.load("Star.yml")
print Config["Data.Energy"].store
X = 0.700
Y = 0.280
Opacity = ObjectThread(OpacityTable,ikwargs=dict(fkey='GN93hz',X=X,Y=Y,snap=True),locking=True)
Opacity.start()
print ""
print "Settings for the Sun"
print "M = %10.6g g" % Ms
print "X = %10.3f" % X
print "Y = %10.3f" % Y
print u"μ = %10.3f" % mmw(X=X,Y=Y)
print ""
m = 1.9890999983295044e+33
print "Inner Boundary Conditions"
print " Initial Step:"
print " m = %10.6e g" % m
(r,l,P,T) = [ 6.96000000e+10, 2.13492744e+33, 3.64246107e+27, 5.77489402e+03]
print "At m=m:"
print " r = %10.6e cm" % r
print " l = %10.6e erg/s" % l
print " P = %10.6e Dyne/cm^2" % P
print " T = %10.6e K" % T
print u" = %10.6e " % density(P=P,T=T,X=X,Y=Y)
print "Derivatives"
from pystellar.threading import ObjectsManager,ObjectPassthrough,EngineManager,ObjectThread X = 0.700 Y = 0.280 epsilon = 0.001 Opacity = ObjectThread(OpacityTable,ikwargs=dict(fkey='GN93hz',X=X,Y=Y),locking=True) Opacity.start() print "Stellar Model Photospheric Boundary Conditions" print "Settings for the Sun" print "M = %10.6g g" % Ms print "X = %10.3f" % X print "Y = %10.3f" % Y print u"ε = %10.3f ergs/g" % epsilon print u"μ = %10.3f" % mmw(X=X,Y=Y) print "Outer Boundary Conditions" print "Testing Outer Presure Conversion Mehtods" print " Inital Guess:" print " R = %10.6e cm" % Rs print " L = %10.6e erg/s" % Lsun start = time.clock() ri,li,Pi,Ti = outer_boundary(R=Rs,L=Lsun,M=Ms,mu=mmw(X=X,Y=Y),optable=Opacity,Piter=10) print "Iterable time taken: %g" % (time.clock() - start) start = time.clock() r,l,P,T = outer_boundary(R=Rs,L=Lsun,M=Ms,mu=mmw(X=X,Y=Y),optable=Opacity,Piter=False) print "Absolute time taken: %g" % (time.clock() - start) print "At m=M:" print " -- Algebraic -------------- | -- Iterable -------------- | -- Delta --------| " print u" R = %10.6e cm, | R = %10.6e cm | ΔR = %11.4e |" % (r,ri,(r-ri)/r)