INFLUENCE OF NOZZLE ASYMMETRY ON SUPERSONIC JETS

被引：73
|
作者：
WLEZIEN, RW
KIBENS, V
机构：
[1] McDonnell Douglas Research Lab, St., Louis, MO, USA, McDonnell Douglas Research Lab, St. Louis, MO, USA
来源：
AIAA JOURNAL | 1988年 / 26卷 / 01期
关键词：
NOZZLES;
D O I：
10.2514/3.9846
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The flowfield and noise-generation characteristics of jets from a series of nonaxisymmetric nozzles have been investigated at supersonic pressure ratios. Detailed acoustic measurements have revealed a strong azimuthal variation in the far-field components of screech and mixing noise. A phase-conditioned schlieren technique has been used to determine the screech modes and the characteristics of the time-mean flowfields. A variety of flow properties has been revealed, including mean jet vectoring, spreading enhancement, and screech suppression. A two-dimensional screech mode has been observed in contrast with the toroidal and helical modes of the reference jet.
引用
收藏
页码：27 / 33
页数：7
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