Specific features of unsteady exhaustion of a gas–particle medium into vacuum
- Authors: Sadin D.V.1, Varvarskii V.M.1
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Affiliations:
- Mozhaiskii Military Space Academy
- Issue: Vol 57, No 3 (2016)
- Pages: 422-431
- Section: Article
- URL: https://journals.rcsi.science/0021-8944/article/view/159315
- DOI: https://doi.org/10.1134/S0021894416030056
- ID: 159315
Cite item
Abstract
Results of an analysis of two-dimensional unsteady exhaustion of a one-velocity gas–particle medium into vacuum for limiting equilibrium cases of heat transfer between the phases are reported. Domains of existence of a one-dimensional Riemann wave and a lateral expansion wave, as well as boundaries of the flow expansion region are determined. Under thermal equilibrium conditions, the reverse flow is found to occupy a large domain extending beyond the boundaries defined by angles of expansion for an ideal gas and for a gas–particle mixture with thermally insulated phases. Exhaustion of a nonequilibrium (in terms of velocities and temperatures) two-phase medium into vacuum is numerically simulated. It is demonstrated that a barrel-shaped structure with wave expansion of the gas and a combined discontinuity in the expanding gas–particle mixture is formed.
About the authors
D. V. Sadin
Mozhaiskii Military Space Academy
Author for correspondence.
Email: sadin@yandex.ru
Russian Federation, St. Petersburg, 197198
V. M. Varvarskii
Mozhaiskii Military Space Academy
Email: sadin@yandex.ru
Russian Federation, St. Petersburg, 197198