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

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.
Fluids 2018, 3(3), 48; https://doi.org/10.3390/fluids3030048
Received: 1 June 2018 / Revised: 25 June 2018 / Accepted: 6 July 2018 / Published: 11 July 2018
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
Show Figures

Figure 1

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. https://doi.org/10.3390/fluids3030048

AMA 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(3):48. https://doi.org/10.3390/fluids3030048

Chicago/Turabian Style

Chiapolino, Alexandre, and Richard Saurel. 2018. "Extended Noble–Abel Stiffened-Gas Equation of State for Sub-and-Supercritical Liquid-Gas Systems Far from the Critical Point" Fluids 3, no. 3: 48. https://doi.org/10.3390/fluids3030048

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

Article Access Map by Country/Region

1
Back to TopTop