Original scientific paper

High density behaviour of extrapolated P, q, T surfaces of real fluids and butterfly catastrophe*

Marijan Ribarič ; J. Stefan Institute, E. Kardelj University, 61000 Ljubljana
Boštjan Žekš ; J. Stefan Institute and Institute of Biophysics of the Medical Faculty, E. Kardelj University, 61000 Ljubljana, Yugoslavia

Abstract

For N2, ethylene, propylene, CO2 and Xe we found that in the region of high densities, q Ε [3qc, 7qc], qc being the critical density, the extrapolated isothermal pressure-density dependences are well described by the following ansatz P (q) = [a0 + a1 (q – q0) + a3 (q – q0)3 + a5 (q – q0)5 + a6 (q – q0)6 + ... ] . [1 + b1 (q – q0) + b3 (q – q0)3 + b5 (q – q0)5 + b6 (q - q0)6 + ... ]-1 with q0 Ε [3qc, 7qc].

Keywords

Hrčak ID:

327663

URI

https://hrcak.srce.hr/327663

Publication date:

7.1.1980.

Article data in other languages: slovenian

Visits: 488 *