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Aerospace 2017, 4(1), 9; doi:10.3390/aerospace4010009

Control of Triple-Shock Configurations and Vortex Structures Forming in High Speed Flows of Gaseous Media past an AD Body under the Action of External Energy Sources

1
Department of Mathematical Modeling of Computer-Aided Design Systems, Dorodnicyn Computing Centre, Federal Research Center “Computer Science and Control” of Russian Academy of Sciences, Moscow 119333, Russia
2
Department of Physical Gas Dynamics, Joint Institute for High Temperatures of Russian Academy of Sciences, Moscow 125412, Russia
This paper is based on the results presented in the Proceedings of the 22nd International Shock Interaction Symposium, Glasgow, UK, 4–8 July 2016 and the XV International Workshop on Magneto-Plasma Aerodynamics, Moscow, Russia, 19–21 April 2016.
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Raffaello Mariani
Received: 28 December 2016 / Revised: 14 February 2017 / Accepted: 15 February 2017 / Published: 20 February 2017
(This article belongs to the Special Issue Fluid-Structure Interactions)
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Abstract

The problem of supersonic streamlining of an aerodynamic (AD) body, “a plate blunted by a cylinder”, by a flow with the freestream Mach number M = 4 containing an external energy source has been studied, taking into account physicochemical transformations. The results of the effect of the ratio of specific heats γ changing in the range from 1.1 to 1.4 on the dynamics of triple-shock configurations and vortex-contact structures are presented for the interaction of an energy source with the bow shock wave. The energy source is modeled via the heated rarefied layer (filament). The angles in the triple-shock configurations, the stagnation pressure, together with the frontal drag force, have been studied dependent on the specific heats ratio γ, the characteristics of the energy source, and also on the angle of the incident shock. Vortex-contact structures have been researched for the Mach numbers 7, 8, 9, as well as the generation of the Richtmyer-Meshkov instability accompanying the formation of a triple-shock configuration. The results show a strong influence of the specific heats ratio of the gas medium and the parameters of the energy source on the triple-shock configuration and aerodynamic characteristics of the body. This conclusion can be useful for aerospace applications in the area of the design of nozzles, intakes, and high speed flying vehicles. Additionally, the results show the possibility of flow control in the atmospheres of other planets using external energy deposition. View Full-Text
Keywords: flow control; external energy deposition; triple-shock configuration; physical-chemical transformations; vortex-contact structure; Richtmyer-Meshkov instability; complex conservative difference scheme flow control; external energy deposition; triple-shock configuration; physical-chemical transformations; vortex-contact structure; Richtmyer-Meshkov instability; complex conservative difference scheme
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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).

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Azarova, O.A.; Gvozdeva, L.G. Control of Triple-Shock Configurations and Vortex Structures Forming in High Speed Flows of Gaseous Media past an AD Body under the Action of External Energy Sources. Aerospace 2017, 4, 9.

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