文献类型：期刊文献

英文题名：Modeling near field acoustic levitation by flexural mode including gas inertia

作者：Li, Jin[1]; Zhang, Wenjun[1]

机构：[1] School of Mechanical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2014

卷号：4

起止页码：3438

外文期刊名：21st International Congress on Sound and Vibration 2014, ICSV 2014

收录：EI(收录号：20150700527486)

语种：英文

外文关键词：Acoustic generators - Acoustic wave scattering - Finite difference method - Acoustic properties - Acoustic wave propagation

摘要：We report a combined theoretical and experimental investigation on the near field acoustic levitation (NFAL). In NFAL a disk is levitated at a height much smaller than the acoustic wavelength. The levitation force is induced by the gas squeeze film between the sound radiation surface and the levitated disk. By taking into account the flexural vibration of the sound radiation surface as well as the gas inertia effect, a modified Reynolds equation has been developed. A high-order finite difference scheme was used to numerically solve the nonlinear convection-diffusion equations. The numerical results and the experimental observations show excellent agreement. Copyright ? (2014) by the International Institute of Acoustics & Vibration All rights reserved.