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唇口形状对二元进气道性能影响数值模拟
石磊, 何国强, 秦飞, 刘佩进
西北工业大学 燃烧、热结构与内流场重点实验室,陕西 西安 710072
摘要:
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。 
关键词:  唇口  形状  二元进气道  影响  数值模拟
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基金项目:
Numerical Investigation of Effects of Cowl Lip Shape on 2-D Inlet
SHI Lei, HE Guo-qiang, QIN Fei, LIU Pei-jin
Science and Technology on Combustion, Internal Flow and Thermal-structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, China
Abstract:
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.
Key words:  Cowl lip  Shape  2-D inlet  Effect  Numerical simulation