Shape oscillation of a sessile drop under the effect of high frequency amplitude-modulated magnetic field

被引：0

作者：

Zhu, Hong-da ^{[1
]}

Lei, Zuo-sheng ^{[2
,3
]}

Zhang, Li-jie ^{[2
,3
]}

Guo, Jia-hong ^{[1
]}

机构：

[1] Shanghai Univ, Shanghai Key Lab Mech Energy Engn, Shanghai Inst Appl Math & Mech, Shanghai 20072, Peoples R China

[2] Shanghai Univ, State Key Lab Adv Special Steels, Shanghai 200444, Peoples R China

[3] Shanghai Univ, Univ Technol Sino Europeenne, Shanghai 200444, Peoples R China

来源：

PHYSICS OF FLUIDS | 2019年 / 31卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ACOUSTICALLY LEVITATED DROPS; SELF-INDUCED VIBRATION; FREE-SURFACE; MOLD OSCILLATION; WATER DROP; DEFORMATION; MECHANISM; DRIVEN; FLOW;

D O I：

10.1063/1.5085249

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The shape oscillation behavior of a sessile mercury drop under the effect of high frequency amplitude-modulated magnetic field (AMMF) is investigated experimentally. It is an effective method to excite the shape oscillation of a liquid metal sessile drop. The high frequency AMMF is generated by a solenoid inductor fed by a specially designed alternating electric current. The surface contour of the sessile drop is observed by a digital camera. At a given modulation frequency and magnetic flux density of the high frequency AMMF, the edge deformations of the drop with azimuthal wave numbers (modes n = 2, 3, 4, 5, 6) were excited. A stability diagram of the shape oscillation of the drop is obtained by analysis of the experimental data. It turns out that when the modulation frequency and magnetic flux density reach a point in the stability diagram which can trigger shape oscillations of the drop of several modes, the shape oscillation of different modes may be seen alternatively. Published under license by AIP Publishing.

引用

页数：6

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