EXPERIMENTAL INVESTIGATION ON PERFORMANCE OF A LARGE S-SHAPED DIFFUSER WITH "CARET" INLET

Zhong Yicheng; Yu Shaozhi; Chen Xiao

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EXPERIMENTAL INVESTIGATION ON PERFORMANCE OF A LARGE S-SHAPED DIFFUSER WITH "CARET" INLET

更新时间：2026-07-07

- EXPERIMENTAL INVESTIGATION ON PERFORMANCE OF A LARGE S-SHAPED DIFFUSER WITH "CARET" INLET
- Vol. 11, Issue 4, (1996)
- 作者机构：
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- Published：1996
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Zhong Yicheng, Yu Shaozhi, Chen Xiao. EXPERIMENTAL INVESTIGATION ON PERFORMANCE OF A LARGE S-SHAPED DIFFUSER WITH "CARET" INLET[J]. 1996, 11(4).
DOI：

Zhong Yicheng, Yu Shaozhi, Chen Xiao. EXPERIMENTAL INVESTIGATION ON PERFORMANCE OF A LARGE S-SHAPED DIFFUSER WITH "CARET" INLET[J]. 1996, 11(4). DOI：

摘要

应用骑波机理论设计了一个设计Ma数为2的“Caret”进气口

并试验研究带有该进气口的矩形大S弯扩压器在地面起飞状态下的流动特性。通过壁面流谱观察

有关截面的总压恢复系数分布图和速度矢量图等分析了进气口和S弯扩压器流动特性。并与带有常规进气口的该大S弯扩压器性能进行对比。试验结果表明在地面起飞状态下及相同扩压器出口平均Ma数下

带有“Caret”进气口的大S弯扩压器出口总压恢复系数略高于带有常规进气口的大S弯扩压器的值。

Abstract

A "caret" inlet was designed for Mach number 2.0 according to theory of waverider.The experimental investigation on flow characteristics of a large S-shaped diffuser with such an inlet has been carried out.The flow characteristics of the inlet and the S-shaped diffuser have been analysed by means of flow visulization on the walls

measurements of total pressure recovery distribution and velocity vector plots in the sections concerned.The performance of this large S-shaped diffuser was compared with that of the same diffuser but with conventional inlet.It is shown that

under takeoff condition and at the same Ma2 of the diffusers

the total pressure recovery of the former is a little higher but the circumferential total pressure distortion index △ σo and DC60 of the former are larger than that of the latter.

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