Gas Volume from Beattie Bridgeman Equation of State - Revised Form
f(V) = R*T*V^3+Beta*V^2+Gama*V+Delta-P*V^4
R=0.08205
T=273.0
B0=0.05587
A0=2.2769
C=128300.0
A=0.01855
B=-0.01587
P=100.0
Beta=R*T*B0-A0-R*C/(T*T)
Gama=-R*T*B0*B+A0*A-R*C*B0/(T*T)
Delta=R*B0*B*C/(T*T)
V(min)=0.0
V(max)=1.0