Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
Philos Trans A Math Phys Eng Sci. 2011 Apr 13;369(1940):1443-58. doi: 10.1098/rsta.2010.0362.
This paper reviews turbulent boundary-layer control strategies for skin-friction reduction of aerodynamic bodies. The focus is placed on the drag-reduction mechanisms by two flow control techniques-spanwise oscillation and spanwise travelling wave, which were demonstrated to give up to 45 per cent skin-friction reductions. We show that these techniques can be implemented by dielectric-barrier discharge plasma actuators, which are electric devices that do not require any moving parts or complicated ducting. The experimental results show different modifications to the near-wall structures depending on the control technique.
本文回顾了用于减少空气动力体表面摩擦阻力的湍流边界层控制策略。重点介绍了两种流动控制技术——横向振荡和横向行波——的减阻机制，这两种技术已被证明可将表面摩擦阻力降低 45%。我们表明，这些技术可以通过电介质阻挡放电等离子体激励器来实现，而等离子体激励器是一种不需要任何运动部件或复杂管道的电气设备。实验结果表明，根据控制技术的不同，近壁结构会发生不同的变化。
