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在低速风洞中研究了微型涡流发生器对超临界翼型边界层分离的控制。根据超临界翼型边界层分离特性,提出了涡流发生器的流动机理。研究了梯形涡流发生器不同高度和弦向位置对边界层分离控制效果的影响。研究表明,微型涡流发生器对超临界翼型边界层分离的控制主要起减阻作用;适宜采用微型涡流发生器对超临界翼型边界层分离进行控制,其最佳位置应在分离线前2~5H涡流发生器高度之间。
The control of the boundary layer separation of the supercritical airfoil by the micro-vortex generator was studied in low-speed wind tunnel. According to the separation characteristics of the boundary layer of the supercritical airfoil, the flow mechanism of the vortex generator is proposed. The effect of the control of the separation of the boundary layer by the chord-shaped positions of the trapezoidal vortex generators at different heights is studied. The results show that the control of the boundary layer of the supercritical airfoil by the micro vortex generator mainly plays the role of drag reduction. The micro vortex generator is suitable for the control of the boundary layer of the supercritical airfoil. ~ 5H vortex generator height between.