Modified polytropic equation of state: "ptrop2"
A polytropic EOS is defined for the unreacted and the reacted states.
In each case, a polynomial is used to represent the variation of
gamma in a perfect-gas form.
Input
reacted_polynomial
unreacted_polynomial
q # specific internal energy added in reaction
cv # specific heat capacity
The polynomials are members of the WXC++ Polynomial class.