Next Article in Journal
Experimental Study on the Aerodynamic Sealing of Air Curtains
Previous Article in Journal
Rheology of an Inverted Cholesteric Droplet under Shear Flow
Article Menu

Export Article

Open AccessArticle
Fluids 2018, 3(3), 48; https://doi.org/10.3390/fluids3030048

Extended Noble–Abel Stiffened-Gas Equation of State for Sub-and-Supercritical Liquid-Gas Systems Far from the Critical Point

1
Aix Marseille Univ, French National Centre for Scientific Research (CNRS), Centrale Marseille, LMA, Marseille, 4 impasse Nikola Tesla, France
2
RS2N, Research Department, Chemin de Gaumin, 83640 Saint-Zacharie, France
*
Author to whom correspondence should be addressed.
Received: 1 June 2018 / Revised: 25 June 2018 / Accepted: 6 July 2018 / Published: 11 July 2018
Full-Text   |   PDF [1979 KB, uploaded 12 July 2018]   |  

Abstract

The Noble–Abel Stiffened-Gas (NASG) equation of state (Le Métayer, O. and Saurel, R. proposed in 2016) is extended to variable attractive and repulsive effects to improve the liquid phase accuracy when large temperature and pressure variation ranges are under consideration. The transition from pure phase to supercritical state is of interest as well. The gas phase is considered through the ideal gas assumption with variable specific heat rendering the formulation valid for high temperatures. The liquid equation-of-state constants are determined through the saturation curves making the formulation suitable for two-phase mixtures at thermodynamic equilibrium. The overall formulation is compared to experimental characteristic curves of the phase diagram showing good agreement for various fluids (water, oxygen). Compared to existing cubic equations of state, the present one is convex, a key feature for computations with hyperbolic flow models. View Full-Text
Keywords: Noble–Abel; stiffened-gas; convexity; two-phase flows; sub-supercritical flows; hyperbolic systems; phase change Noble–Abel; stiffened-gas; convexity; two-phase flows; sub-supercritical flows; hyperbolic systems; phase change
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Chiapolino, A.; Saurel, R. Extended Noble–Abel Stiffened-Gas Equation of State for Sub-and-Supercritical Liquid-Gas Systems Far from the Critical Point. Fluids 2018, 3, 48.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Fluids EISSN 2311-5521 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top