Nonparametric scaled equation of state and approximation of P-ρ-T data near the vapor-liquid critical point

被引:4
|
作者
Bezverkhii, PP [1 ]
Martynets, VG [1 ]
Matizen, ÉV [1 ]
机构
[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Div, Novosibirsk 630090, Russia
关键词
D O I
10.1134/1.1842881
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present a new scaled equation of state adequately describing the P-rho-T data for fluids near the vapor-liquid transition point and compare this equation to the Schofield parametric equation of state. A comparative analysis of the approximation of data for He-4, C2H4 , and H2O in the critical region shows that both these equations correctly describe the behavior of thermodynamic functions asymptotically close to the critical point. (C) 2004 MAIK "Nauka / Interperiodica".
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页码:998 / 1004
页数:7
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