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import extpy |
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from pylab import * |
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from solverreporter import * |
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|
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def pvplot(self): |
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|
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browser = extpy.getbrowser() |
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ioff() |
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figure() |
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# |
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# I have chosen several temperatures |
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# |
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|
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TT = [190,210,230,250,270,290,310,330,350,370,400,420] |
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for T in TT: |
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self.T.setRealValue(T) |
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# |
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# collect the data for plotting in two sets of arrays (one for X, one for Y) |
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# I have one set here - for P versus V at different T's |
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# |
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XX1 = [] |
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YY1 = [] |
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# |
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# there has to be a space between "in" and "[" |
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# |
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|
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for P in [8,9,10,15,20,25,30,40,50,60,70,80,100,120,140,150,170,190]: |
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self.P.setRealValueWithUnits(P,"bar") |
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# |
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# send the pair of values P, T to the solver |
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# and append the Volume and Pressure from the solver to the arrays |
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try: |
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browser.sim.solve(browser.solver,SimpleSolverReporter(browser,message="T = %f, P = %f" % (T,P))) |
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XX1.append(float(self.V)) |
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YY1.append(float(self.P)) |
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except: |
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browser.reporter.reportError('Failed to solve for P = %f' % P) |
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continue |
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## plot the data |
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|
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plot(XX1,YY1,label=("%d K" % T)) |
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|
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hold(1) |
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|
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legend() |
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xlabel("Molar volume") |
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ylabel("Presure (Pa)") |
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title("p-V curves at varying temperatures") |
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ion() |
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show() |
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|
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extpy.registermethod(pvplot) |
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|
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def zplot(self): |
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|
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browser = extpy.getbrowser() |
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ioff() |
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figure() |
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axes([0.1,0.1,0.71,0.8]) |
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# |
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# I have chosen three temperatures |
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# |
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TT = [190,210,230,250,270,290,310,330,350,370] |
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for T in TT: |
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self.T.setRealValue(T) |
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# |
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# collect the data for plotting in two sets of arrays (one for X, one for Y) |
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# I have two sets here - one for P versus y and other for P versus x |
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# |
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PPr1 = [] |
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ZZ1 = [] |
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# |
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# change x1 from 0 to 1.0 |
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# there has to be a space between "in" and "[" |
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# |
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|
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for P in [10,11,12,13,15,20,25,30,40,50,60,70,80,100,120,140,150,170,175,180,185,190]: |
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self.P.setRealValueWithUnits(P,"bar") |
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# |
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# send the pair of values T x1 to the solver |
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# and append the Pressure and y1 (from the solver) to the arrays |
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# the x's are also appended |
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try: |
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browser.sim.solve(browser.solver,SimpleSolverReporter(browser,message="T = %f, P = %f" % (T,P))) |
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PPr1.append(float(self.Pr)) |
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ZZ1.append(float(self.Z)) |
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except: |
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browser.reporter.reportError('Failed to solve for P = %f' % P) |
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continue |
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## plot the data |
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|
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plot(PPr1,ZZ1,label="%d K" % T) |
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hold(1) |
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|
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# after all the plots are done, add some labels and a legend |
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xlabel("Reduced pressure, p/p_crit") |
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ylabel("Generalised compressibility, z") |
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legend(loc=(1.03,0.2)) |
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ion() |
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show() |
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|
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extpy.registermethod(zplot) |
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# the above method can be called using "EXTERNAL zplot(self)" in ASCEND. |
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# if you want to see the azeotrope clearly, restrict the calculation to one |
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# temperature |
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