为了研究唇口形状对二元混压式进气道的性能影响,采用Fluent进行了数值模拟。研究发现,唇口面积的减小会带来一定的流量损失,但可以有效地降低起动马赫数,提高总压恢复系数。同时,据此提出了二元进气道的一种优化设计方法。 

Aimed at investigating the effects of cowl lip shape on 2-D inlet, Fluent was adopted for numerical simulation. A conclusion is drawn that the reduction of area of the cowl lip can cut down the starting Mach number of the inlet effectively at price of sacrificing some mass flow. Meanwhile, the total pressure recovery is improved. Based on that, an optimized design method was put forward finally.