Imperial College London
Alternate

DrFredericCegla

Faculty of Engineering, Department of Mechanical Engineering

Reader in Mechanical Engineering
 
 
 
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Contact

 

+44 (0)20 7594 8096f.cegla

 
 
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Location

 

567City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Xi:2012:10.1121/1.4726009,
author = {Xi, X and Cegla, F and Mettin, R and Holsteyns, F and Lippert, A},
doi = {10.1121/1.4726009},
journal = {JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA},
pages = {(37--47)--(37--47)},
title = {Collective bubble dynamics near a surface in a weak acoustic standing wave field},
url = {http://dx.doi.org/10.1121/1.4726009},
volume = {132},
year = {2012}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The transport of bubbles to a neighboring surface is very important in surface chemistry, bioengineering, and ultrasonic cleaning, etc. This paper proposes a multi-bubble transport method by using an acoustic standing wave field and establishes a model that explains the multi-bubble translation by expressing the balance between Bjerknes forces and hydrodynamic forces on a bubble in a liquid medium. Results indicated that the influence of primary Bjerknes force, secondary Bjerknes force, and buoyancy force on the bubble translation depends on the position of the target bubble in the acoustic field. Moreover, it was found that increasing the size of a bubble or pressure amplitude can accelerate the bubble motion and enhance the bubble-bubble interaction. The secondary Bjerknes force between two bubbles can switch from an attractive one when they oscillate in phase to a repulsive one when the bubble oscillations are out of phase. These findings provide an insight into the multi-bubble translation near a surface and can be applied to future bubble motion control studies, especially in drug delivery, sonoporation, and ultrasonic cleaning. (C) 2012 Acoustical Society of America. [http://dx.doi.org/10.1121/1.4726009]
AU  - Xi,X
AU  - Cegla,F
AU  - Mettin,R
AU  - Holsteyns,F
AU  - Lippert,A
DO  - 10.1121/1.4726009
EP  - 47
PY  - 2012///
SN  - 0001-4966
SP  - 37
TI  - Collective bubble dynamics near a surface in a weak acoustic standing wave field
T2  - JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
UR  - http://dx.doi.org/10.1121/1.4726009
UR  - http://hdl.handle.net/10044/1/13848
VL  - 132
ER  -
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