Additional sub-cooling heat transfer correlations for liquid H2
- Adding basic thermodynamic functions for rho and Cp at (T,p)
- Adding heat transfer correlations for boiling film, transient and sub-cooling boiling regimes for liquid-H2.
- Option to use a correlation-type of HTC for sub-cooling regime instead of the standard RTI model.
- Minor fix to the thermo for h-Polynomial type.