Lagrangian solution of supersonic real gas flows

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Journal of Computational Physics; (United States)

DOI:https://doi.org/10.1006/jcph.1993.1017· OSTI ID:6655194

Loh, Chingyuen; Liou, Mengsing ^[1]

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1. NASA Lewis Research Center, Cleveland, OH (United States)

This paper details the procedure of the real gas Riemann solution in the Lagrangian approach originally proposed by Loh and Hui for perfect gases. The extension to real gases is nontrivial and requires substantial development of an exact real-gas Riemann solver for the Lagrangian form of conservation laws. The first-order Gudonov scheme is enhanced for accuracy by adding limited anti-diffusive terms according to Sweby. Extensive calculations were made to test the accuracy and robustness of the present real gas Lagrangian approach, including complex wave interactions of different types. The accuracy for capturing 2D oblique waves and slip line is clearly demonstrated. In addition, we also show the real gas effect in a generic engine nozzle.

• OSTI ID: 6655194
• Journal Information: Journal of Computational Physics; (United States), Journal Name: Journal of Computational Physics; (United States) Vol. 104:1; ISSN 0021-9991; ISSN JCTPAH
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100 -- Internal Combustion Engines
661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANALYTICAL SOLUTION
CONSERVATION LAWS
ENGINES
FLUID FLOW
FLUID MECHANICS
FLUIDS
FUNCTIONS
GASES
LAGRANGIAN FUNCTION
MECHANICS
NOZZLES
RIEMANN FUNCTION
SUPERSONIC FLOW
TWO-DIMENSIONAL CALCULATIONS