进气道设计中的几个工程计算问题

MODIFICATION IN ENGINEERING CALCULATION METHOD FOR INLET DESIEN

本文对进气道设计中二维斜激波计算、圆唇口总压恢复系数估算、亚音速临界流量系数估算及最小喉道面积的确定等几个工程计算方法进行了改进,以适应在计算机上计算.计算精度满足设计参数选择的要求.

Some modifications are conducted in engineering calculations for inlet design such as two-dimensional oblique shock angle,total pressure recovery coefficient at rounded lip,subsonic critical flow coefficient and minimum throat area,to be available to computerization.It is shown that, the calculation with modified method is procise enough to satisfy the needs of selecting and analysing parameters in inlet design, compared with experimental data. The modified method presented in this paper could be used in CAD of inlet.