Microwave energy release regimes for drag reduction in supersonic flows

Kolesnichenko, Yu. F.; Brovkin, Vadim; Azarova, O. A.; Grudnitsky, V.; Lashkov, V. A.; Mashek, I. Ch.

doi:10.2514/6.2002-353

Cited by 56 publications

(30 citation statements)

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“…The analogous conclusion for air (γ = 1.4) has been obtained in [6]. Thus, the trend of decreasing the stagnation pressure and the drag force which is greater for smaller αρ (and higher temperature) continues for gas media with γ < 1.4.…”

Section: Shock Structure In the Case Of γ = 11 And Small α ρsupporting

confidence: 55%

“…One can see that with decreasing the density (or increasing the temperature) of the gas medium in a region of the energy source, the stagnation pressure on the body's surface declines (together with the front drag force). The analogous conclusion for air (γ = 1.4) has been obtained in [6]. Thus, Aerospace 2017, 4, 9 9 of 13 the trend of decreasing the stagnation pressure and the drag force which is greater for smaller α ρ (and higher temperature) continues for gas media with γ < 1.4.…”

Section: A Study Of the Stagnation Pressure And Frontal Drag Force Fosupporting

confidence: 53%

“…The mechanism of this vortex formation has been shown to be connected with Richtmyer-Meshkov instability generation [28]. The drag reduction initiated by the vortex of this type has been obtained numerically in [6]. …”

Section: A Study Of the Stagnation Pressure And Frontal Drag Force Fomentioning

confidence: 97%

“…The effect of the external energy source in an oncoming flow in air was shown to lead to a decrease of the stagnation pressure, together with the drag force of the body. Energy sources of different types (microwave, laser, discharge) were used for these purposes [6,7]. Two mechanisms have been established causing this phenomenon, the reflection of a rarefaction wave from the body's surface [8] and the effect of a vortex structure generating via the interaction of an energy source with a bow shock [6].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Shock Structure In the Case Of γ = 11 And Small α ρsupporting

confidence: 55%

Section: A Study Of the Stagnation Pressure And Frontal Drag Force Fosupporting

confidence: 53%

Section: A Study Of the Stagnation Pressure And Frontal Drag Force Fomentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Microwave energy deposition has been shown to be an effective and energy-efficient method for drag reduction in supersonic flows [9]. Fig.…”

Section: Microwave Energy Deposition For Flow Controlmentioning

confidence: 99%

High Speed Flow Control Using Microwave Energy Deposition

Knight¹,

Kolesnichenko

Brovkin

et al. 2008

46th AIAA Aerospace Sciences Meeting and Exhibit

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In recent years a variety of beamed energy deposition techniques have been investigated for flow control in high speed flows. Among these, microwave energy deposition has been demonstrated experimentally to achieve significant drag reduction for blunt body flows. A gas dynamic model for microwave energy deposition in air is developed using 23 species and 238 reactions. The model is applied to the simulation of microwave energy deposition in supersonic flow past a cylinder.

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Triple-Shock Configurations, Vortices, and Instabilities Resulting from the Interaction of Energy Release with a Shock Layer in Gaseous Media

Azarova

Gvozdeva

2018

Shock Wave Interactions

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Microwave energy release regimes for drag reduction in supersonic flows

Cited by 56 publications

References 1 publication

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

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

High Speed Flow Control Using Microwave Energy Deposition

Triple-Shock Configurations, Vortices, and Instabilities Resulting from the Interaction of Energy Release with a Shock Layer in Gaseous Media

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