Improvement: Adding an absolute value to avoid a negative value (possible with steady state initialisation)

HTML descriptions updated

Error correction: The reference in the function enthalpyOfWater and its derivative was 0°C rather than 20°C. That was causing the error in the T_phX function

Adding a HTML description

Enhancement: Adding a opening with analytical calculation of the mass flow rate with respect to pressure (static and hydrostatique)

Error correction: wrong expression for mass fraction in the mass flow vector at ports

Modification to avoid issues when having a medium where the massFraction_pTphi function does not exist

Modification to taken account of buoyancy when gas with a lower density is at the bottom of the opening.

Correction: Mistake on sign of power. The power is positiv when exchanger cools the fluid A and heats up the fluid B

Correction: water inlet of the sensible part when the exchanger is considered as wet is TB_mid_2 and not TB_in