Abstract
Acoustic streaming is an ubiquitous phenomenon resulting from time-averaged nonlinear dynamics in oscillating fluids. In this theoretical study, we show that acoustic streaming can be suppressed by two orders of magnitude in major regions of a fluid by optimizing the shape of its confining walls. Remarkably, the acoustic pressure is not suppressed in this shape-optimized cavity, and neither is the acoustic radiation force on suspended particles. This basic insight may lead to applications, such as acoustophoretic handling of nm-sized particles, which is otherwise impaired by the streaming.
Original language | English |
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Article number | 214501 |
Journal | Physical Review Letters |
Volume | 124 |
Issue number | 21 |
Number of pages | 6 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 2020 |