论文部分内容阅读
在地面静止状态下试验研究了尖脊进气道气动特性以及唇口厚度对进气道性能影响 ,给出了进气道各侧壁沿程静压分布及其出口总压分布图谱 ,研究了进气口流动特点及其对出口总压畸变流场的影响。试验表明 ,Caret进气道进口存在一大一小的反向旋转涡 ,该旋涡的作用使得进气道高、低压区均旋转了 90°以上。进口下唇口和外唇口厚度对地面静止状态下的进气道总压恢复系数和总压畸变指数有较大的影响 ,为进气唇口厚度的选择提供了依据。
In the static state of the ground, the aerodynamic characteristics of the tip inlet and the influence of the thickness of the lip on the inlet were experimentally studied. The distribution of the static pressure along each side of the inlet and the distribution of the total pressure distribution were given. Characteristics of Air Inlet Flow and Its Influence on Total Pressure Distortion Flow Field at Outlet. Experiments show that there is a large and a small counter-rotating vortex at the inlet of Caret inlet. The effect of this vortex is that the inlet high and low pressure zones are all rotated by more than 90 °. The thickness of the lower lip and the outer lip have a great influence on the total pressure recovery coefficient and the total pressure distortion index of the inlet under the static condition of the ground, which provides the basis for the selection of the inlet lip thickness.