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Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma
Plasma Physics Reports ( IF 1.1 ) Pub Date : 2021-03-01 , DOI: 10.1134/s1063780x21020069
A. Yu. Starikovskiy , N. L. Aleksandrov

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.



中文翻译:

在强非平衡脉冲等离子体中通过超快局部加热进行气体动力学流量控制

摘要-

本文介绍了有关使用高度非平衡脉冲等离子体进行气体动力流控制的现代工作的综述。主要关注基于超快(在大气压的纳秒级时间尺度上)的局部气体加热的效果,因为目前,通过气体排放来控制高速流量的主要成功与该热机制有关。 。注意引起排气与气流相互作用的物理机制。审查的第一部分概述了等离子体空气动力学中最流行的脉冲能量沉积方法:纳秒表面屏障放电,脉冲火花放电以及飞秒和纳秒光学放电。在这些放电中实现了在高电场下空气超快加热的机理,以及放电等离子体的衰减期间,将分别进行分析。综述的第二部分给出了许多等离子体辅助控制气体动力学流动的例子。它考虑了对超音速物体前方的冲击波配置的控制,其轨迹的控制,准静态分离流和层的控制,层流-湍流过渡的控制以及边界层的静态和动态分离的控制在高攻角下,以及等离子执行器在不同天气条件下的操作问题以及使用等离子为飞行物体除冰的问题。

更新日期:2021-03-01
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