Week 2 Air standard Cycle
"""
otto cycle simulator
"""
import math
import matplotlib.pyplot as plt
# input
p1 = 101325
t1 = 500
gama = 1.4
t3 = 2300
# gometric parameter
bore = 0.1
stroke = 0.1
con_rod = 0.15
cr = 12
# volume computation
v_s = (math.pi/4)*pow(bore,2)*stroke
v_c = v_s/(cr-1)
v1 = v_c + v_s
# state point 2
v2 = v_c
# p2v2^gama = p1v1^gama
p2 = p1*pow(v1,gama)/pow(v2,gama)
#p2v2/t2 = p1v1/t1 | rhs = p1v1/t1 | p2v2/t2 = rhs | t2 = p2v2/rhs
rhs = p1*v1/t1
# state point 3
v3 = v2
#p3v3/t3 = p2v2/t2 | rhs = p2v2/t2 | p3 = rhs*t3/v3
rhs = p2*v2/t2
p3 = rhs*t3/v3
# state point 4
v4 = v1
#p4v4^gama = p3v3^gama
p4 = p3*pow(v3,gama)/pow(v4,gama)
#p4v4/t4 = rhs
t4 = p4*v4/rhs
plt.plot([v1,v2,v3,v4],[p1,p2,p3,p4])
plt.show()