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

Autor:	Hong-da Zhu, Lijie Zhang, Jia-hong Guo, Zuo-sheng Lei
Rok vydání:	2019
Předmět:	Fluid Flow and Transfer Processes Physics Oscillation Mechanical Engineering Drop (liquid) Computational Mechanics Mechanics Condensed Matter Physics Inductor Magnetic field Physics::Fluid Dynamics Amplitude Sessile drop technique Mechanics of Materials Electric current Frequency modulation
Zdroj:	Physics of Fluids. 31:053301
ISSN:	1089-7666 1070-6631
DOI:	10.1063/1.5085249
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8d4f6c3df64758d6b5935f3976e4accb https://doi.org/10.1063/1.5085249 Zobrazit plný text záznamu