ACOUSTIC SUPPRESSION OF AUTOOSCILLATIONS IN A WIND TUNNEL WITH AN OPEN TEST SECTION.

被引：0

作者：

Zhukovskiy Inst of Aerohydrodynamics, USSR ^{[1
]}

Breytveyt, V.K. ^{[1
]}

Zosimov, A.V. ^{[1
]}

Timofeyev, Ye.B. ^{[1
]}

机构：

[1] Belopol'skaya, L. L., Belopol'skaya, L. L.

来源：

Fluid mechanics. Soviet research | 1986年 / 15卷 / 04期

关键词：

ACOUSTIC VARIABLES MEASUREMENT - Acoustic Field - NOZZLES;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The velocity and pressure fluctuations in the open test section of a wind tunnel with a 1. 2 m diameter nozzle, designed for maximum suppression of low-frequency flow fluctuations were investigated. However, at several average flow velocities we observed self oscillations of the flow, which cause a two- to three-fold increase in the intensity of longitudinal velocity fluctuations. These fluctuations in the flow in the test section were suppressed by application of a low-frequency acoustic field, which reduced the intensity of velocity and pressure fluctuations of self oscillatory flow modes to a level equal to that of non-self oscillatory modes.

引用

页码：1 / 8

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