S12. The role of cavitation microstreaming in aqueous surfactant solutions on the growth of bubbles by rectified diffusion(Oral Presentation)

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概要

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• The enhancement in the rate of bubble growth via rectified diffusion in surfactant solutions during acoustic cavitation has been investigated. Dodecyl trimethyl ammonium chloride (DTAC) caused a greater increase in the growth rate than equivalent concentrations of the surfactants sodium dodecyl sulphate (SDS) and dodecyl dimethyl ammonium propane sulfonate (DDAPS). However, if the electrostatic charge was suppressed by the addition of salt, DDAPS showed the highest growth rate. Particle-image velocimetry (PIV) has been used to characterize the microstreaming around a bubble in aqueous solutions of these surfactants. Results indicate an enhancement of microstreaming velocities in the vicinity of the bubble when surfactant of any form is present in the solution and the results correlate with the enhanced bubble growth rates. A clear difference can also be observed when bubbles undergo surface mode oscillations that dramatically increase the streaming velocities, resulting in a chaotic flow.

• 日本ソノケミストリー学会の論文
• 2011-10-15

著者

• Leong Thomas

  The University of Melbourne, School of Chemistry/Department of Biomolecular and Chemical Engineering

• Ashokkumar Muthupandian

  The University of Melbourne, School of Chemistry/Department of Biomolecular and Chemical Engineering

• Collis James

  The University of Melbourne, Department of Mechanical Engineering

• Manaseh Richard

  Swinbourne University of Technology, Faculty of Engineering and Industrial Science

• Ooi Andrew

  The University of Melbourne, Department of Mechanical Engineering

• Kentish Sandra

  The University of Melbourne, School of Chemistry/Department of Biomolecular and Chemical Engineering

関連論文

• S12. The role of cavitation microstreaming in aqueous surfactant solutions on the growth of bubbles by rectified diffusion(Oral Presentation)

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