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Adding an example dir

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This commit is contained in:
Harry Moffat
2009-03-24 20:18:12 +00:00
parent 5b26e6bbe0
commit 6b030cb1c3
6 changed files with 378 additions and 0 deletions
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9
Cantera/python/examples/gasdynamics/isentropic/.cvsignore Normal file
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Makefile
runtest
ct2ctml.log
diff_out_0.txt
gri30.xml
h2o2.xml
liquidvapor.xml
output_0.txt
transport_log.xml

15
Cantera/python/examples/gasdynamics/isentropic/Makefile.in Normal file
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#!/bin/sh
PYTHON_CMD = @PYTHON_CMD@
run:
$(PYTHON_CMD) isentropic.py
test:
./runtest
clean:
rm -f *.log *.csv *.xml
./cleanup
# end of file

5
Cantera/python/examples/gasdynamics/isentropic/cleanup Executable file
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#!/bin/sh
#
/bin/rm -rf equilibrate_log*.html
/bin/rm -rf .cttmp* ct2ctml.log transport_log.xml vcs_equilibrate_res*.csv \
catcomb.csv output_0.txt diff*

90
Cantera/python/examples/gasdynamics/isentropic/isentropic.py Executable file
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from Cantera import *
from Cantera.num import zeros
import math
def soundspeed(gas):
"""The speed of sound. Assumes an ideal gas."""
# if gas.isIdealGas():
gamma = gas.cp_mass()/gas.cv_mass()
return math.sqrt(gamma * GasConstant
* gas.temperature() / gas.meanMolecularWeight() )
#else:
# raise "non-ideal not implemented."
def isentropic(g = None):
"""
ISENTROPIC isentropic, adiabatic flow example
In this example, the area ratio vs. Mach number curve is
computed. If a gas object is supplied, it will be used for the
calculations, with the stagnation state given by the input gas
state. Otherwise, the calculations will be done for a 10:1
hydrogen/nitrogen mixture with stagnation T0 = 1200 K, P0 = 10
atm.
"""
if g == None:
gas = GRI30()
gas.set(T = 1200.0,P = 10.0*OneAtm,X = 'H2:1,N2:0.1')
else:
gas = g
# get the stagnation state parameters
s0 = gas.entropy_mass()
h0 = gas.enthalpy_mass()
p0 = gas.pressure()
mdot = 1 # arbitrary
amin = 1.e14
data = zeros((200,4),'d')
# compute values for a range of pressure ratios
for r in range(200):
p = p0*(r+1)/201.0
# set the state using (p,s0)
gas.set(S = s0, P = p)
h = gas.enthalpy_mass()
rho = gas.density()
v2 = 2.0*(h0 - h) # h + V^2/2 = h0
v = math.sqrt(v2)
area = mdot/(rho*v); # rho*v*A = constant
if area < amin: amin = area
data[r,:] = [area, v/soundspeed(gas), gas.temperature(), p/p0]
data[:,0] /= amin
return data
if __name__ == "__main__":
print isentropic.__doc__
data = isentropic()
try:
from pylab import *
clf
plot(data[:,1], data[:,0])
ylabel('Area Ratio')
xlabel('Mach Number')
title('Isentropic Flow: Area Ratio vs. Mach Number')
show()
except:
print 'area ratio, Mach number, temperature, pressure ratio'
print data

212
Cantera/python/examples/gasdynamics/isentropic/output_blessed_0.txt Normal file
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ISENTROPIC isentropic, adiabatic flow example
In this example, the area ratio vs. Mach number curve is
computed. If a gas object is supplied, it will be used for the
calculations, with the stagnation state given by the input gas
state. Otherwise, the calculations will be done for a 10:1
hydrogen/nitrogen mixture with stagnation T0 = 1200 K, P0 = 10
atm.
area ratio, Mach number, temperature, pressure ratio
[[ 1.30469086e+01 4.18453822e+00 2.70202095e+02 4.97512438e-03]
[ 8.22559670e+00 3.67857400e+00 3.29941747e+02 9.95024876e-03]
[ 6.30079079e+00 3.39589395e+00 3.70405399e+02 1.49253731e-02]
[ 5.22634245e+00 3.20015488e+00 4.01965000e+02 1.99004975e-02]
[ 4.52790569e+00 3.05070912e+00 4.28239982e+02 2.48756219e-02]
[ 4.03195312e+00 2.92997543e+00 4.50961600e+02 2.98507463e-02]
[ 3.65876748e+00 2.82876597e+00 4.71105183e+02 3.48258706e-02]
[ 3.36620070e+00 2.74168088e+00 4.89279551e+02 3.98009950e-02]
[ 3.12971350e+00 2.66527972e+00 5.05892668e+02 4.47761194e-02]
[ 2.93397438e+00 2.59723694e+00 5.21232543e+02 4.97512438e-02]
[ 2.76887308e+00 2.53590779e+00 5.35510812e+02 5.47263682e-02]
[ 2.62745129e+00 2.48008661e+00 5.48888010e+02 5.97014925e-02]
[ 2.50475091e+00 2.42886355e+00 5.61489097e+02 6.46766169e-02]
[ 2.39713601e+00 2.38153526e+00 5.73413450e+02 6.96517413e-02]
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[ 2.21687238e+00 2.29645325e+00 5.95539546e+02 7.96019900e-02]
[ 2.14049232e+00 2.25789150e+00 6.05862622e+02 8.45771144e-02]
[ 2.07143708e+00 2.22156228e+00 6.15757278e+02 8.95522388e-02]
[ 2.00866322e+00 2.18721568e+00 6.25263135e+02 9.45273632e-02]
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[ 1.89871255e+00 2.12365863e+00 6.43240175e+02 1.04477612e-01]
[ 1.85025591e+00 2.09411493e+00 6.51766668e+02 1.09452736e-01]
[ 1.80546446e+00 2.06587683e+00 6.60016398e+02 1.14427861e-01]
[ 1.76392657e+00 2.03882860e+00 6.68009405e+02 1.19402985e-01]
[ 1.72529180e+00 2.01286896e+00 6.75763507e+02 1.24378109e-01]
[ 1.68925975e+00 1.98790873e+00 6.83294626e+02 1.29353234e-01]
[ 1.65557133e+00 1.96386903e+00 6.90617057e+02 1.34328358e-01]
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[ 1.58007469e+00 4.05086480e-01 1.16519484e+03 8.95522388e-01]
[ 1.61413689e+00 3.94656507e-01 1.16692185e+03 9.00497512e-01]
[ 1.65102777e+00 3.84017340e-01 1.16864147e+03 9.05472637e-01]
[ 1.69113540e+00 3.73150142e-01 1.17035379e+03 9.10447761e-01]
[ 1.73492690e+00 3.62033422e-01 1.17205886e+03 9.15422886e-01]
[ 1.78297036e+00 3.50642479e-01 1.17375676e+03 9.20398010e-01]
[ 1.83596478e+00 3.38948683e-01 1.17544755e+03 9.25373134e-01]
[ 1.89478143e+00 3.26918531e-01 1.17713131e+03 9.30348259e-01]
[ 1.96052259e+00 3.14512405e-01 1.17880809e+03 9.35323383e-01]
[ 2.03460654e+00 3.01682875e-01 1.18047796e+03 9.40298507e-01]
[ 2.11889442e+00 2.88372355e-01 1.18214099e+03 9.45273632e-01]
[ 2.21588518e+00 2.74509772e-01 1.18379724e+03 9.50248756e-01]
[ 2.32902692e+00 2.60005685e-01 1.18544677e+03 9.55223881e-01]
[ 2.46323657e+00 2.44744860e-01 1.18708965e+03 9.60199005e-01]
[ 2.62581558e+00 2.28574507e-01 1.18872592e+03 9.65174129e-01]
[ 2.82817604e+00 2.11284549e-01 1.19035566e+03 9.70149254e-01]
[ 3.08938842e+00 1.92572196e-01 1.19197891e+03 9.75124378e-01]
[ 3.44436790e+00 1.71972158e-01 1.19359575e+03 9.80099502e-01]
[ 3.96613421e+00 1.48700149e-01 1.19520622e+03 9.85074627e-01]
[ 4.84404272e+00 1.21224791e-01 1.19681038e+03 9.90049751e-01]
[ 6.83162862e+00 8.55864718e-02 1.19840829e+03 9.95024876e-01]]

47
Cantera/python/examples/gasdynamics/isentropic/runtest.in Executable file
View File

@@ -0,0 +1,47 @@
#!/bin/sh
#
#
temp_success="1"
/bin/rm -f output_0.txt diff_csv.txt diff_out_0.txt
##########################################################################
PYTHON_CMD=@PYTHON_CMD@
prog=isentropic.py
if test ! -f $prog ; then
echo $prog ' does not exist'
exit -1
fi
#################################################################
#
CANTERA_DATA=${CANTERA_DATA:=../../../data/inputs}; export CANTERA_DATA
CANTERA_BIN=${CANTERA_BIN:=../../../bin}
#################################################################
$PYTHON_CMD $prog > output_0.txt <<+
1.0
+
retnStat=$?
if [ $retnStat != "0" ]
then
temp_success="0"
echo "$prog returned with bad status, $retnStat, check output"
fi
diff -w output_blessed_0.txt output_0.txt > diff_out_0.txt
retnStat_0=$?
retnTotal=1
if test $retnStat_0 = "0"
then
retnTotal=0
fi
if test $retnTotal = "0"
then
echo "Successful test comparison on "`pwd`
else
echo "Unsuccessful test comparison of txt files on "`pwd` " test"
echo " see diff_outi_0.txt "
fi