A study of slipstreams in triple shock wave configurations

Gvozdeva, L. G.; Gavrenkov, S. A.; Nesterov, A. A.

doi:10.1007/s00193-015-0568-1

Cited by 10 publications

(5 citation statements)

References 14 publications

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“…In Bazhenova et al. 12–14 the angles in unsteady triple-type configurations together with the slip stream lines have been studied for different gas media. Influence of the adiabatic index γ has been shown to strongly affect the shape of these configurations and causes an increase in shear layer instability.…”

Section: Introductionmentioning

confidence: 99%

“…10 In Bazhenova et al, 11 it was shown that the self-similar assumption becomes possible in the case when thermodynamic equilibrium is established behind a shock wave. In Bazhenova et al [12][13][14] the angles in unsteady triple-type configurations together with the slip stream lines have been studied for different gas media. Influence of the adiabatic index has been shown to strongly affect the shape of these configurations and causes an increase in shear layer instability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Control of triple-shock configurations in high-speed flows over a cylindrically blunted plate in gases for different Mach numbers

Azarova

Gvozdeva

2018

Proceedings of the Institution of Mechanical Engineers, Part G:

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In this article, triple-shock configurations in the problem of the influence of an energy source on a supersonic flow past a plate blunted by a cylinder are studied. The changes of angles in triple-shock configurations depending on an external energy source for different gas mixtures have been investigated for freestream Mach numbers from 3 to 4.2. The dependences of angles in triple-type configurations on the characteristics of energy release have been presented. Complicated shock-vortex structures with multiple reflections of simple waves accompanying these configurations have been obtained. Generation of the Richtmyer–Meshkov instability has been established and mechanism for its generation has been suggested. Conclusion about the possibility of the control of unsteady triple-type shock configurations and accompanying slip streams with the use of an external energy source has been made.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control of triple-shock configurations in high-speed flows over a cylindrically blunted plate in gases for different Mach numbers

Azarova

Gvozdeva

2018

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…A similar situation has been modeled in [28], together with modeling the Richtmyer-Meshkov instability in the case of supersonic flow past an AD body. In [29] the influence of the ratio of specific heats on the behavior of the slipstreams was investigated. It was shown that the increase of the Mach number and the decrease of an adiabatic index lead to the greater instability of the slipstreams and, as a result, the mixing processes are much more efficient in this case.…”

Section: Introductionmentioning

confidence: 99%

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

Azarova

Gvozdeva

2017

Aerospace

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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.

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“…The negative double Mach reflection in the problem of shock wave diffraction of a wedge was experimentally detected in [4,5]. The conditions for realization of various modes of double Mach reflection (positive and negative) were discussed in [6][7][8]. In [9], the effects of thin return jets formation near the wedge surface and intense circulation currents behind the Mach stem in case of double Mach reflection were investigated.…”

mentioning

confidence: 99%

Negative Mach Reflection with Multiple Three-Shock Configurations for Shock Wave Diffraction on a Wedge

Yu.

Maksimov

Fokeev

2022

Technical Physics Letters

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Within the framework of the Euler equations, a numerical study of the structure of a self-similar flow for various types of negative Mach reflection during diffraction of a shock wave by a wedge is performed. Along with the known modes of double and triple Mach reflection, a qualitatively new mode of negative Mach reflection with multiple three-shock configurations is observed. Peculiarities of the transition from multiple Mach reflection to regular reflection when changing the wedge angle are noted. Keywords: shock wave, three-shock configuration, double Mach reflection, negative Mach reflection

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A study of slipstreams in triple shock wave configurations

Cited by 10 publications

References 14 publications

Control of triple-shock configurations in high-speed flows over a cylindrically blunted plate in gases for different Mach numbers

Control of triple-shock configurations in high-speed flows over a cylindrically blunted plate in gases for different Mach numbers

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

Negative Mach Reflection with Multiple Three-Shock Configurations for Shock Wave Diffraction on a Wedge

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