Self-radiation force on a moving monopolar source

The radiation force exerted on an object by an acoustic wave is a widely studied phenomenon since the early work of Rayleigh, Langevin and Brillouin, and has led in the last decade to tremendous developments for acoustic micromanipulation. Despite extensive work on this phenomenon, the expressions o...

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Bibliographic Details
Published in:Journal of fluid mechanics 2022-12, Vol.952, Article A22
Main Authors: Roux, A., Martischang, J.-P., Baudoin, M.
Format: Article
Language:English
Subjects:
Acoustic waves
Acoustics
Asymmetry
Classical Physics
Doppler effect
Doppler sonar
Fluid Dynamics
JFM Papers
Mechanics
Micromanipulation
Particle size
Physics
Radiation
Sound velocity
Sound waves
Velocity
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Summary:The radiation force exerted on an object by an acoustic wave is a widely studied phenomenon since the early work of Rayleigh, Langevin and Brillouin, and has led in the last decade to tremendous developments for acoustic micromanipulation. Despite extensive work on this phenomenon, the expressions of the acoustic radiation force applied on a particle have so far been derived only for a steady particle, hence neglecting the effect of its displacement on the radiated wave. In this work, we study the acoustic radiation force exerted on a monopolar source translating at a constant velocity that is small compared to the sound speed. We demonstrate that the asymmetry of the emitted field resulting from the Doppler effect induces a radiation force on the source opposite to its motion.
ISSN:0022-1120
1469-7645
DOI:10.1017/jfm.2022.920