Active Flow Control
Active Flow Control
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主动流量控制
DOI：
10.1007/978-3-540-71439-2_9
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Gursul I
中科院分区：
文献类型：
--
作者：
Gursul I
综述了细长、非细长和高展弦比机翼的涡控概念。对于细长三角翼来说，控制涡击穿是最重要的目标，这是通过改变旋流水平和压力梯度来实现的。综述了控制面、吹气、吸力、高频和低频激励以及反馈控制对涡流击穿延迟的影响。对于非细长三角翼，流动再附着是流动控制方法中最重要的方面。对于高展弦比机翼，旋涡控制的概念是多种多样的，从减少阻力到减少尾流危害和噪声，这可以通过改变旋涡的位置、强度和结构以及产生多个旋涡来实现。
Vortex control concepts employed for slender, nonslender and high aspect ratio wings were reviewed. For slender delta wings, control of vortex breakdown has been the most important objective, which is achieved by modifications to swirl level and pressure gradient. Delay of vortex breakdown with the use of control surfaces, blowing, suction, high-frequency and low-frequency excitation, and feedback control was reviewed. For nonslender delta wings, flow reattachment is the most important aspect for flow control methods. For high aspect ratio wings, vortex control concepts are diverse, ranging from drag reduction to attenuation of wake hazard and noise, which can be achieved by modifications to the vortex location, strength, and structure, and generation of multiple vortices.