6cb4bd93ce
4 spaces per indentation level, no tabs, no trailing whitespace, and a single newline at end of each file.
98 lines
2.8 KiB
Python
98 lines
2.8 KiB
Python
"""
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Gas 1: a stoichiometric H2/O2/Ar mixture
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Gas 2: a wet CO/O2 mixture
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-------------------------------------
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| gas 1 || gas 2 |
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-------------------------------------
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The two volumes are connected by an adiabatic free piston.
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The piston speed is proportional to the pressure difference
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between the two chambers.
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Note that each side uses a *different* reaction mechanism
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"""
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from Cantera import *
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from Cantera.Reactor import *
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import sys
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fmt = '%10.3f %10.1f %10.4f %10.4g %10.4g %10.4g %10.4g'
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print '%10s %10s %10s %10s %10s %10s %10s' % ('time [s]','T1 [K]','T2 [K]',
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'V1 [m^3]', 'V2 [m^3]',
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'V1+V2 [m^3]','X(CO)')
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gas1 = importPhase('h2o2.cti')
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gas1.set(T = 900.0, P = OneAtm, X = 'H2:2, O2:1, AR:20')
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gas2 = GRI30()
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gas2.set(T = 900.0, P = OneAtm, X = 'CO:2, H2O:0.01, O2:5')
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r1 = Reactor(gas1, volume = 0.5)
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r2 = Reactor(gas2, volume = 0.1)
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w = Wall(left = r1, right = r2, K = 1.0e3)
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reactors = ReactorNet([r1, r2])
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tim = []
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t1 = []
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t2 = []
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v1 = []
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v2 = []
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v = []
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xco = []
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xh2 = []
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for n in range(30):
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time = (n+1)*0.002
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reactors.advance(time)
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print fmt % (time, r1.temperature(), r2.temperature(),
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r1.volume(), r2.volume(), r1.volume() + r2.volume(),
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r2.moleFraction('CO'))
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tim.append(time)
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t1.append(r1.temperature())
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t2.append(r2.temperature())
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v1.append(r1.volume())
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v2.append(r2.volume())
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v.append(r1.volume() + r2.volume())
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xco.append(r2.moleFraction('CO'))
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xh2.append(r1.moleFraction('H2'))
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# plot the results if matplotlib is installed.
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# see http://matplotlib.sourceforge.net to get it
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args = sys.argv
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if len(args) > 1 and (args[1] == '-plot' or
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args[1] == '-p' or
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args[1] == '--plot'):
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try:
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from matplotlib.pylab import *
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clf
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subplot(2,2,1)
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plot(tim,t1,'-',tim,t2,'r-')
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xlabel('Time (s)');
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ylabel('Temperature (K)');
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subplot(2,2,2)
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plot(tim,v1,'-',tim,v2,'r-',tim,v,'g-')
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xlabel('Time (s)');
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ylabel('Volume (m3)');
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subplot(2,2,3)
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plot(tim,xco);
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xlabel('Time (s)');
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ylabel('CO Mole Fraction (right)');
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subplot(2,2,4)
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plot(tim,xh2);
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xlabel('Time (s)');
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ylabel('H2 Mole Fraction (left)');
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show()
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except:
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print """matplotlib required.
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http://matplotlib.sourceforge.net"""
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else:
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print """To view a plot of these results, run this script with the option -plot"""
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