Acoustic radiation force analysis using finite difference time domain method

A. Grinenko, P. D. Wilcox, C. R. P. Courtney, B. W. Drinkwater

Research output: Contribution to journalArticle (Academic Journal)peer-review

11 Citations (Scopus)

Abstract

Acoustic radiation force exerted by standing waves on particles is analyzed using a finite difference time domain Lagrangian method. This method allows the acoustic radiation force to be obtained directly from the solution of nonlinear fluid equations, without any assumptions on size or geometry of the particles, boundary conditions, or acoustic field amplitude. The model converges to analytical results in the limit of small particle radii and low field amplitudes, where assumptions within the analytical models apply. Good agreement with analytical and numerical models based on solutions of linear scattering problems is observed for compressible particles, whereas some disagreement is detected when the compressibility of the particles decreases. (C) 2012 Acoustical Society of America. [http://dx.doi.org/10.1121/1.3699204]

Original languageEnglish
Pages (from-to)3664-3670
Number of pages7
JournalJournal of the Acoustical Society of America
Volume131
Issue number5
DOIs
Publication statusPublished - May 2012

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