Sb. Kiselev et al., Equation of state and thermodynamic properties of pure D2O and D2O+H2O mixtures in and beyond the critical region, INT J THERM, 20(2), 1999, pp. 563-588
A parametric crossover model is adapted to represent the thermodynamic prop
erties of pure D2O in the extended critical region. The crossover equation
of state for D2O incorporates scaling laws asymptotically close to the crit
ical point and is transformed into a regular classical expansion far From t
he critical point. An isomorphic generalization of the law of corresponding
states is applied to the prediction of thermodynamic properties and the ph
ase behavior of D2O + H2O mixtures over a wide region around the locus of v
apor-liquid critical points. A comparison is made with experimental data fo
r pure D2O and for the D2O + H2O mixture. The equation of slate yields a go
od representation of thermodynamic property data in the range of temperatur
es 0.8T(c)(x) less than or equal to T less than or equal to 1.5T(c)(x) and
densities 0.35 rho(c)(x) less than or equal to rho less than or equal to 1.
65 rho(c)(x).