Definition of Acoustic streaming
Acoustic streaming is a steady flow in a fluid driven by the absorption of high-amplitude acoustic oscillations. This phenomenon can be observed near sound emitters, or in the standing waves within a Kundt's tube. Acoustic streaming was explained first by Lord Rayleigh in 1884. It is the less-known opposite of sound generation by a flow.
There are two situations where sound is absorbed in its medium of propagation:
during propagation in bulk flow (Eckart streaming). The attenuation coefficient is
Terms mentioned above
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Further reading
- Acoustic streaming · Wikibooks: Engineering Acoustics
Frequently asked questions
What is Acoustic streaming?
Acoustic streaming is a steady flow in a fluid driven by the absorption of high-amplitude acoustic oscillations. This phenomenon can be observed near sound emitters, or in the standing waves within a Kundt's tube.