Acoustic radiation force analysis using finite difference time domain method
Acoustic radiation force analysis using finite difference time domain method
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DOI：
10.1121/1.3699204
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发表时间：
2012-05-01
影响因子：
2.4
通讯作者：
Drinkwater, B. W.
中科院分区：
文献类型：
--
作者：
Grinenko, A.;Wilcox, P. D.;Drinkwater, B. W.
用时域有限差分拉格朗日方法分析了驻波对粒子的声辐射力。这种方法可以直接从非线性流体方程的解中获得声辐射力，而不需要对粒子的大小或几何形状、边界条件或声场振幅进行任何假设。在小颗粒半径和低场振幅的限制下，模型收敛于分析结果，其中分析模型中的假设适用。对于可压缩粒子，基于线性散射问题解的解析模型和数值模型具有较好的一致性，而当粒子的可压缩性降低时，则存在一些差异。(C) 2012美国声学学会。[http://dx.doi.org/10.1121/1.3699204]
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]