A NEW PHONOMENON OF ACOUSTIC STREAMING
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摘要: 本文描述了一种新的声学整流效应现象,当Helmholtz共振腔内部声源以共振频率激振时,整流以一股湍流喷流形式发生。流动显示、热线和激光测量结合起来对此声学整流过程进行了研究,结果表明整流是由Reynolds应力作用产生的。
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关键词:
- 声学整流 /
- 共振频率 /
- Reynolds应力
Abstract: This paper describes a new phenomenon of acoustic streaming, which ta-kes place when a Helmholtz resonator is excited by an inside sound source with resonant frequency, and takes the form of a turbulent jet. Flow visualizations, hot wire measurements and LDV measurements were applied to investigate the streaming process. It is found that the streaming is forced by the action of Reynolds stress.-
Key words:
- acoustic streaming /
- resonant frequency /
- Reynolds stress
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