Code:
from numpy import *
from scipy.optimize import * #importing all packages from scipy and
numpy
def fun(z):
Ca1 = z[0]
Ca2 = z[1]
Cb1 = z[2]
Cb2 = z[3]
tau = 5 # in min
Ca0 = 20 # in mol / liter
k = 0.12 # in min^-1
F = empty((4)) # intialize F to store 4 equations
F[0] = (Ca0 - Ca1)/tau - k*pow(Ca1 , 1.5)
F[1] = -Cb1/tau + k*pow(Ca1 , 1.5)
F[2] = (Ca1 - Ca2)/tau - k*pow(Ca2 , 1.5)
F[3] = (Cb1 - Cb2)/tau - k*pow(Ca2 , 1.5)
return F
zguess = array([1, 1, 1, 1])
z = fsolve(fun, zguess)
print(z)
Output:
Ca1 = 7.55 , Ca2 = 3.55 , Cb1
= 12.45 , Cb2 = 8..45
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