Abstract

The flow in the subsonic S-shaped air intake with a D-shaped inlet and circular outlet cross sections is calculated with the combined high-resolution RANS/ILES method. A flat plate, on which the air intake is mounted, is used as an airframe simulator. The boundary layer is specified at the beginning of the plate, and its profile is close to the profile of the turbulent boundary layer. The calculations were performed on a structured grid containing 7 × 10⁶ cells; good agreement with the experiment data is obtained. The causes of large flow nonuniformities at the outlet of air intake are revealed; the efficiency of the use of synthetic jets to improve its characteristics is studied. The influence of the regime parameters of synthetic jets and the location of slots for their egress on the air-intake flow is analyzed.

中文翻译：

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使用RANS / ILES方法研究S形进气口与飞机一体机中流动控制的合成射流应用效率

摘要

使用组合的高分辨率RANS / ILES方法计算具有D形入口和圆形出口横截面的亚音速S形进气口中的流量。装有进气口的平板用作机身模拟器。边界层在板的开始处指定，其轮廓接近湍流边界层的轮廓。计算是在包含7×10 ⁶的结构化网格上进行的细胞; 获得与实验数据的良好一致性。揭示了进气口大流量不均匀的原因；研究了使用合成射流改善其特性的效率。分析了合成射流的状态参数及其出口位置对进气流的影响。