STREAMWISE VORTICES IN AN UNDEREXPANDED AXISYMMETRICAL JET

被引：32

作者：

KROTHAPALLI, A ^{[1
]}

BUZYNA, G ^{[1
]}

LOURENCO, L ^{[1
]}

机构：

[1] FLORIDA STATE UNIV,TALLAHASSEE,FL 32316

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1991年 / 3卷 / 08期

关键词：

D O I：

10.1063/1.857914

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This Letter describes an experimental investigation demonstrating the existence of streamwise vortices in an underexpanded jet issuing from a convergent axisymmetric nozzle at a moderate pressure ratio of 5.1, and at a Reynolds number of 1.8 x 10(6). These vortices are quite strong and are located in the supersonic region of the jet between the intercepting shock and the jet boundary. They seem to play a significant role by enhancing mixing between the ambient and jet fluids in the supersonic region of the jet. The scale of these vortices increases with downstream distance by a process of vortex merging.

引用

页码：1848 / 1851

页数：4

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