物理学报Issue(16)：1-7,7.DOI:10.7498/aps.63.164301
声悬浮过程的格子Boltzmann方法研究
Study of acoustic levitation by lattice Boltzmann metho d
摘要
Abstract
The axisymmetric multiple-relaxation-time lattice Boltzmann (LB) method is used to study the acoustic levitation of a rigid disk sample in a closed cylindrical resonant chamber. The simulation results show that the resonant cavity length L is equal to 0.499λfor (001) mode, and the resonance shiftδL is approximately equal to-0.9 with a disk sample located in the chamber center, which accord with the analytical results derived from linear acoustics. The LB method naturally includes the viscosity and resonance shift during the simulation of acoustic levitation force on the disk sample, which gives the results not only consistent with the theory in magnitude, but also coherent with the experiments in more details. Some of the nonlinear effects associated with acoustic levitation, such as waveform distortion, acoustic streaming, and radiation pressure, are also revealed by the LB simulation.关键词
声悬浮/格子Boltzmann方法/非线性效应Key words
acoustic levitation/lattice Boltzmann method/nonlinear effects引用本文复制引用
解文军,滕鹏飞..声悬浮过程的格子Boltzmann方法研究[J].物理学报,2014,(16):1-7,7.基金项目
国家自然科学基金(批准号:51071126,51371148)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant Nos.51071126,51371148) （批准号:51071126,51371148）
