25 results about "Acoustic streaming" patented technology

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. 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. The attenuation coefficient is α=2ηω²/(3ρc³), following Stokes' law (sound attenuation).