Numerical study of non-equilibrium high-enthalpy separated flows near a double cone and a wedge

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Abstract

Validation issues of models of vibration-dissociation coupling used in Navier-Stokes and Direct Simulation Monte Carlo (DSMC) computations are discussed with respect to high-speed non-equilibrium flows with a separation region under conditions implemented in the ground facilities. Two test cases are considered: low-enthalpy N2 flow around a double cone and high-enthalpy N2/N flow around a double wedge. The results of our numerical simulations are compared to experimental measurements and numerical results of other authors. Good agreement between numerical and experimental data is obtained for the low-enthalpy case, while only qualitative agreement is achieved for the high-enthalpy case. The discrepancy between the DSMC and Navier-Stokes results are also discussed.

Original languageEnglish
Title of host publicationProceedings of the XXV Conference on High-Energy Processes in Condensed Matter, HEPCM 2017
Subtitle of host publicationDedicated to the 60th Anniversary of the Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Editors Fomin
PublisherAmerican Institute of Physics Inc.
Number of pages7
Volume1893
ISBN (Electronic)9780735415782
DOIs
Publication statusPublished - 26 Oct 2017
Event25th Conference on High-Energy Processes in Condensed Matter, HEPCM 2017 - Novosibirsk, Russian Federation
Duration: 5 Jun 20179 Jun 2017

Publication series

NameAIP Conference Proceedings
PublisherAMER INST PHYSICS
Volume1893
ISSN (Print)0094-243X

Conference

Conference25th Conference on High-Energy Processes in Condensed Matter, HEPCM 2017
CountryRussian Federation
CityNovosibirsk
Period05.06.201709.06.2017

Keywords

  • SIMULATION

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