The ninth-mode sectorial oscillation of acoustically levitated drops  

作　　者：YAN ZhenLin XIE WenJun GENG DeLu WEI BingBo 

机构地区：[1]Department of Applied Physics, Northwestern Polytechnical University, Xi＇an 710072, China

出　　处：《Chinese Science Bulletin》2011年第31期3284-3288,共5页

基　　金：supported by the National Natural Science Foundation of China (50971105, 51071126)

摘　　要：We report on the ninth-mode sectorial oscillation of acoustically levitated drops excited by actively modulating sound pressure. A numerical computation based on the level set method was performed to model drop shape evolution by solving an incompressible two-phase flow problem. The calculated shapes of the oscillating drop are in good agreement with experimental observations. The relationship between the oscillation frequency and parameters describing the flattened drops is studied both experimentally and numerically. The frequency of the ninth-mode sectorial oscillation decreases with increasing equatorial radius and can be well-described by a modified Rayleigh equation.We report on the ninth-mode sectorial oscillation of acoustically levitated drops excited by actively modulating sound pressure. A numerical computation based on the level set method was performed to model drop shape evolution by solving an incompressible two-phase flow problem. The calculated shapes of the oscillating drop are in good agreement with experimental observations. The relationship between the oscillation frequency and parameters describing the flattened drops is studied both experimentally and numerically. The frequency of the ninth-mode sectorial oscillation decreases with increasing equatorial radius and can be well-described by a modified Rayleigh equation.

关 键 词：振荡频率 扇形 悬浮 声学 RAYLEIGH方程 数值计算模型 实验观察 水平集方法 

分 类 号：TB535[理学—物理]