Calculation of spinodal density in subcritical region for liquid argon

Equations of state are used for calculation of thermodynamic properties and phase behavior of fluids. One of the applications of equation state is calculation of spinodal density. The spinodal density is the locus of vanishing first derivative of isotherms, (...) . In this work by using of proposed equation of state [۱] which is expressed in terms of reduced variables, we calculated spinodal density in subcritical region for liquid argon. This equation is expressed in the following nondimensional form (...)where A and B are defined [۱,۲] :(...)We will denote the reduced spinodal densities by zsl where zsl (...) is the spinodal density of the liquid. It should be noted that (...) since the spinodal curve shares the same tangent with the critical isotherm at the critical point.

کلیدواژه ها:

Equation of state ، Subcritical ، Spinodal density ، Argon.