NUMRICAL SIMULATION OF NONLINEAR FOCUSED ULTRASOUND

摘要：

　　Numerical simulation is employed to characterize the sound field of high intensity focused ultrasound,whose results agree Well with the analytical results.The sound field in nonlinear case seems to be much more complicated compared with that in linear case.The first three harmonics are extracted from the distorted wave by the zero-phase band-pass filter.It is demonstrated that the amplitude distribution of fundamental wave change little while that of the second and third harmonics vary a lot,as the source pressure increases.And the relative phase almost keep the same in the focal region.It can be concluded that numerical simulation is of great importance in predicting the nonlinear focused sound field at high sound pressure levels.

关键词： Numerical Simulation High Intensity Focused Ultrasound Nonlinear Sound field characteristic Relative Phase

作者: De-lin WU Lei YAO Shen-ping GAO Yu-wei Pan Xiao-bo Wang Lan GAO Xing-yan YU

作者单位: Zhejiang Institute of Metrology, Hangzhou, 310018, P.R.China;Key Laboratory of Acoustics and Vibrati Zhejiang Institute of Metrology, Hangzhou, 310018, P.R.China;Key Laboratory of Acoustics and Vibrati The Fisrt Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310013, P.R.China

会议类型: 国际会议

会议名称: The 2019 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2019(第14届)全国压电和声波理论及器件技术研讨会)

会议地点: 石家庄

会议语种:英文

页码: 130-134

在线出版日期: 2019-11-01（万方平台首次上网日期，不代表论文的发表时间）