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Title: Synthetic jet generation by high-frequency cavitation
Authors: Mohammadzadeh, Milad
Gonzalez-Avila, Silvestre Roberto
Liu, Kun
Wang, Qi Jie
Ohl, Claus-Dieter
Keywords: Bubble Dynamics
Issue Date: 2017
Source: Mohammadzadeh, M., Gonzalez-Avila, S. R., Liu, K., Wang, Q. J., & Ohl, C.-D. (2017). Synthetic jet generation by high-frequency cavitation. Journal of Fluid Mechanics, 823, R3-.
Series/Report no.: Journal of Fluid Mechanics
Abstract: Cavitation bubbles are nucleated at a high repetition rate in water by delivering a pulsed laser through a fibre optic. Continuous high-frequency cavitation drives a stream away from the fibre tip. Using high-speed photography and particle image velocimetry, the stream is characterised as a synthetic jet, generated by trains of vortices induced by non-spherical bubble collapse. At low laser power, the bubbles collapse before the arrival of a subsequent laser pulse. Yet, by increasing the laser power, a system of bubbles is formed which leads to complex bubble–bubble interactions. The synthetic jet is observed regardless of the bubble formation regime, demonstrating the stability of the phenomenon. Synthetic jet generation by repetitive bubble collapse extends the well-studied acoustic streaming from small-amplitude bubble oscillations.
ISSN: 0022-1120
DOI: 10.1017/jfm.2017.358
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
Rights: © 2017 Cambridge University Press (CUP). This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Fluid Mechanics, Cambridge University Press. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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