正弦交流介质阻挡放电等离子体激励器诱导流场研究的进展与展望  

RESEARCH PROGRESS AND OUTLOOK OF FLOW FIELD CREATED BY DIELECTRIC BARRIER DISCHARGE PLASMA ACTUATORS DRIVEN BY A SINUSOIDAL ALTERNATING CURRENT HIGH-VOLTAGE POWER

作　　者：张鑫[1] 王勋年[2] Zhang Xin;Wang Xunnian(State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000,Sichuan,China;Low Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,Sichuan,China)

机构地区：[1]中国空气动力研究与发展中心空气动力学国家重点实验室,四川绵阳621000 [2]中国空气动力研究与发展中心低速空气动力研究所,四川绵阳621000

出　　处：《力学学报》2023年第2期285-298,共14页Chinese Journal of Theoretical and Applied Mechanics

基　　金：国家自然科学基金(11902336);四川省科技计划(2022JDJQ0022)资助项目.

摘　　要：正弦交流介质阻挡放电等离子体流动控制技术是基于等离子体激励的主动流动控制技术,具有响应时间短、结构简单、能耗低、不需要额外气源装置等优点,在飞行器增升减阻、抑振降噪、助燃防冰等方面具有广阔的应用前景.针对“激励器消耗的大部分能量尚未被挖掘利用、诱导流场的完整演化过程尚未完全掌握、诱导流场的演化机制尚不明确”这三方面问题,本文首先从激励器诱导流场的空间结构、时空演化过程、演化机制三个方面回顾总结了激励器诱导流场的研究进展.在诱导流场空间结构方面,发现了高电压激励下诱导射流的湍流特性,辨析了壁面拟序结构与无量纲激励参数之间的关联机制;从激励器诱导声能方面挖掘出了激励器潜在的能量,发现了“等离子体诱导超声波与诱导声流”的新现象,提出了声激励机制;在时空演化过程方面,阐明了激励器诱导流场从薄型壁射流发展为“拱形”射流、再演变为启动涡,最终形成准定常射流的完整演化过程;在演化机制方面,结合声学特性提出了以“升推”为主的诱导流场演化机制.其次,围绕激励器诱导流场,进一步凝练出下一步研究重点,为突破等离子体流动控制技术瓶颈,打通“概念创新—技术突破—演示验证”的创新链路,实现工程应用提供支撑.Flow control technology using dielectric barrier discharge plasma actuators which are driven by a sinusoidal alternating current high-voltage power is an active flow control technology based on plasma actuation and has some advantages,such as short response time,simple structure,low consumption power,and no need for additional air source devices.It has broad application prospects in lift enhancement and drag reduction,vibration suppression and noise reduction,assisted combustion and anti-icing.In view of the three problems that most of the power consumed by the plasma actuator has not been exploited,the whole evolution process of the induced flow field has not been fully understood,and the evolution mechanism of the induced flow field is not clear,the present manuscript summarizes the research progress of the induced flow field of the plasma actuator from the three aspects which include the spatial structure,the space-time evolution process and the evolution mechanism of the induced flow field of the plasma actuator.For flow structures of the induced flow field,the turbulent characteristics of induced wall jet under high voltage excitation are found,and the correlation mechanism between coherent structure in the vicinity of wall and nondimensional actuation parameters is analyzed;The potential energy of the plasma actuator is excavated from the aspect of the acoustic energy induced by the plasma actuator,and the new phenomenon of"the ultrasound and the acoustic streaming flow created by the plasma actuator"is found,and the novel mechanism of acoustic excitation created by the plasma actuators is proposed;In the aspect of the spatial-temporal evolution process,the complete evolution process of the flow field induced by the plasma actuator from the thin wall jet to the"arch"jet,then to the starting vortex,and finally to the quasi-steady wall jet is uncovered;In terms of the evolution mechanism,the evolution mechanism of the induced flow field is proposed based on the acoustic characteristics.In addition,to break th

关 键 词：等离子体 流动控制 介质阻挡放电 诱导流场 声流 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]