Control of Shock-Wave/Boundary-Layer Interaction Using Nanosecond-Pulsed Plasma Actuators

Kinefuchi, Kiyoshi; Starikovskiy, Andrey; Miles, Richard B.

doi:10.2514/1.b36530

Cited by 35 publications

(32 citation statements)

References 15 publications

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“…Figure 41 shows that, with an increase in the highvoltage pulse repetition rate, the effect of heating becomes stronger. At a repetition rate of 5 kHz, the effects of mixing and heating practically compensated each other and, at higher frequencies, the effect of heating prevailed, which led to an increase in the size of the separation zone [193].…”

Section: Controlling the Interaction Of A Shock Wavementioning

confidence: 96%

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Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

Starikovskiy

Aleksandrov

2021

Plasma Phys. Rep.

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Abstract— The paper presents a review of modern works on gasdynamic flow control using a highly nonequilibrium pulsed plasma. The main attention is paid to the effects based on ultrafast (on the nanosecond time scale for atmospheric pressure) local gas heating, since, at present, the main successes in controlling high-speed flows by means of gas discharges are associated with this thermal mechanism. Attention is paid to the physical mechanisms responsible for the interaction of the discharge with gas flows. The first part of the review outlines the most popular approaches for pulsed energy deposition in plasma aerodynamics: nanosecond surface barrier discharges, pulsed spark discharges, and femto- and nanosecond optical discharges. The mechanisms of ultrafast heating of air at high electric fields realized in these discharges, as well as during the decay of the discharge plasma, are analyzed separately. The second part of the review gives numerous examples of plasma-assisted control of gasdynamic flows. It considers control of the configuration of shock waves in front of a supersonic object, control of its trajectory, control of quasi-stationary separated flows and layers, control of a laminar–turbulent transition, and control of static and dynamic separation of the boundary layer at high angles of attack, as well as issues of the operation of plasma actuators in different weather conditions and the use of plasma for the de-icing of a flying object.

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Section: Controlling the Interaction Of A Shock Wavementioning

confidence: 96%

“…In [192,193], a detailed study of the mechanism of controlling the shock wave-boundary layer interaction by means of a surface nanosecond barrier discharge was carried out (Fig. 39).…”

Section: Controlling the Interaction Of A Shock Wavementioning

confidence: 99%

Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

Starikovskiy

Aleksandrov

2021

Plasma Phys. Rep.

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“…This study explores the underlying physics associated with NS-SDBD actuator for control of SWBLI based on numerical analysis. The numerical setup is in accordance with the previous experiment by the authors 4 . Turbulence is treated as combined approach of RANS (Reynolds Averaged Navier-Stokes) and LES: LES is applied around the NS-SDBD region to resolve the vorticity generation and evolution, followed by momentum transfer to the boundary layer, while RANS is applied to the rest of calculation domain to save the computational resources.…”

mentioning

confidence: 89%

“…discharge, NS-SDBD, plasma actuators 4 . The experimental result indicated that the NS-SDBD plasma actuator worked in two ways for SWBLI control: boundary layer heating and vorticity generation near the surface.…”

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confidence: 99%

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Numerical investigation of nanosecond pulsed plasma actuators for control of shock-wave/boundary-layer separation

2018

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This study numerically explores the flow physics associated with nanosecond pulsed plasma actuators that are designed to control shock-wave induced boundary-layer separation in a Mach 2.8 supersonic flow. By using two dielectric barrier surface discharge actuator configurations, parallel and canted with respect to the flow velocity vector, a previous experiment suggested that the actuator worked in two ways to influence the interaction: boundary layer heating and vorticity production. The heating effect was enhanced with the parallel electrode and made the boundary-layer separation stronger, while the canted electrode produced vorticity and suppressed the boundary-layer separation due to the momentum transfer from the core flow. Because the detailed physical processes are still unclear, in this paper a numerical investigation is undertaken with a large eddy simulation and an energy deposition model for the plasma actuation, in which the dielectric barrier discharge produced plasma is approximated as a high temperature region. The flow characteristics without the plasma actuation correspond to the experimental observation, indicating that the numerical method successfully resolves the shock-wave/boundary-layer interaction. With the plasma actuation, complete agreement between the experiment and calculation has not been obtained in the size of shock-wave/boundary-layer interaction region. Nevertheless, as with the experiment, the calculation successfully demonstrates definite difference between the parallel and canted electrodes: the parallel electrode causes excess heating and increases the strength of the interaction, while the canted electrode leads to a reduction of the interaction strength, with a corresponding thinning of the boundary layer due to the momentum transfer. The counter flow created by the canted actuator plays an important role in the vortex generation, transferring momentum to the boundary layer and, consequently, mitigating the shock induced boundary layer separation.

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Plasma Aerodynamics and Flow Control by Superfast Local Heating

Starikovskiy

Aleksandrov

2023

Springer Series in Plasma Science and Technology

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Control of Shock-Wave/Boundary-Layer Interaction Using Nanosecond-Pulsed Plasma Actuators

Cited by 35 publications

References 15 publications

Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

Numerical investigation of nanosecond pulsed plasma actuators for control of shock-wave/boundary-layer separation

Plasma Aerodynamics and Flow Control by Superfast Local Heating

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