等离子体湍流摩擦减阻研究进展与展望  

Progress and outlook of plasma-based turbulent skin-friction drag reduction

作　　者：苏志 宗豪华 梁华[1,2] 吴云 方子淇[3] SU Zhi;ZONG Haohua;LIANG Hua;WU Yun;FANG Ziqi(National Key Lab of Aerospace Power System and Plasma Technology,Aviation Engineering school,Airforce Engineering University,Xi’an 710038,China;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710000,China;School of Aerospace Engineering,Xi’an Jiaotong University,Xi’an 710000,China)

机构地区：[1]空军工程大学航空工程学院航空动力系统与等离子体技术全国重点实验室,西安710038 [2]西安交通大学机械工程学院,西安710000 [3]西安交通大学航天航空学院,西安710000

出　　处：《空气动力学学报》2023年第9期1-19,共19页Acta Aerodynamica Sinica

基　　金：国家自然科学基金(12002384)。

摘　　要：飞机摩擦阻力可占巡航总阻力的一半以上,减小飞机湍流条件下的摩擦阻力对于提升飞机巡航性能、降低燃油消耗具有重要意义。等离子体激励是等离子体在电磁场力作用下运动或气体放电产生的压力、温度、物性变化等对气流施加的一种可控扰动。采用等离子体激励减小飞机湍流摩擦阻力具有结构重量代价小、易于智能控制等诸多优势,受到国内外广泛关注。鉴于此,按照等离子体激励特性及其与湍流边界层的相互关系,将等离子体湍流减阻方法分为非定常激励、定常激励等类型,并梳理了其研究历程与进展。在平板湍流边界层中,等离子体激励能够诱导大尺度流向涡,产生输运作用,使摩擦阻力减小40%以上;在巡航迎角工况下的翼型上,激励同样能在20 m/s的来流速度下使翼型总阻力减小13.7%。发展新型高效能、高强度等离子体激励方法,实现高雷诺数、强逆压梯度气流环境下的湍流减阻,融入机器学习,推动开环控制向智能自适应发展,是等离子体湍流减阻技术未来的发展方向。Aircraft friction drag accounts for more than half of the total cruising drag;thus,turbulent friction drag reduction is vital to improving flight performance and reducing flight costs.Plasma actuation is a controllable disturbance of pressure,temperature,and physical property changes caused by discharging gas or the moving plasma subjected to electromagnetic force.Compared to other turbulent friction drag reduction methods,plasma actuation has many advantages,such as lightweight and intelligent control capability,so it has received widespread attention.This paper provides a detailed overview of the development history and research progress of the plasma-based turbulent drag reduction method.In flat-plate turbulent boundary layers,plasma actuation can reduce friction drag by more than 40%by inducing large-scale vortical structures that enhance transportation.For airfoils at cruising angles of attack,plasma actuation can reduce the total drag of airfoils by up to 13.7%at a freestream velocity of 20 m/s.Developing new efficient plasma drag reduction actuation methods,adapting to flows with high Reynolds numbers and strong pressure gradients,and developing from open-loop blind control to intelligent adaptive control combining artificial intelligence,are the future development trends of the plasma-based turbulent drag reduction method.

关 键 词：湍流减阻 等离子体激励 介质阻挡放电 流动控制 湍流边界层 

分 类 号：P352.4[天文地球—空间物理学] O539[天文地球—地球物理学]