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针对微型涡流发生器、实体鼓包这两种被动流动控制技术和零净质量射流这种主动流动控制技术进行了数值模拟。研究了微型涡流发生器的高度和弦向安装位置对超临界机翼增升减阻的影响规律,高度合适的微型涡流发生器对机翼上表面的流动分离控制起着有利作用;微型涡流发生器最佳气动效率的取得与其弦向安装位置有关。研究了实体鼓包的高度对超临界翼型减少激波阻力和增加升阻比的影响规律,在激波的波脚位置有效地使用实体鼓包,可以减小激波阻力;在中高升力系数情况下,使用实体鼓包可提高升阻比。还研究了零净质量射流的速度幅值和射流频率对翼型增加升力的影响规律,随着射流速度幅值的增加,翼型的平均升力系数和阻力系数都要增加;射流频率对升力的影响呈非线性。
The active flow control technology of two kinds of passive flow control technology and zero net mass jet was simulated by micro vortex generator and solid drum. The effect of the micro-vortex generator height and chord-mounting position on the drag reduction of supercritical airfoil is studied. A highly suitable micro-vortex generator plays an important role in the flow separation control of the upper wing. The micro-vortex generator Acquisition of the best aerodynamic efficiency and its chord-mounted position. The effect of the height of the body drum on the reduction of shock resistance and the increase of the drag-drag ratio of the supercritical airfoil is studied. The effective use of the solid drum at the foot of the shock wave can reduce the shock resistance. In the case of medium-high lift coefficient Under, the use of solid drum kits can improve the resistance ratio. The effect of velocity and jet frequency of zero-net mass jet on the increase of airfoil lift was also studied. The average lift coefficient and drag coefficient of airfoil both increased with the increase of jet velocity amplitude. The impact is nonlinear.