Formation and Dynamics of Droplets in a Magnetic Fluid in Microchannels in an Inhomogeneous Magnetic Field of a Ring Magnet

IF 0.48 Q4 Physics and Astronomy Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI:10.1134/S1062873824707888
D. A. Kalyuzhnaya, E. A. Sokolov, G. A. Zhukov, P. A. Ryapolov
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Abstract

A study was made of the dynamics of nonmagnetic droplets in magnetic fluids in microchannels with the flow-focusing configuration under the action of an inhomogeneous magnetic field of a ring magnet. Two types of multiphase systems were investigated: nonmagnetic emulsions “oil in water,” “water in oil,” and “water in oil in water,” as well as magnetic oil-in-water emulsions in which the magnetic fluid was used as the continuous phase. Characterization was made of the dependences of the sizes of the generated nonmagnetic inclusions on the flow rate of the continuous magnetic phase and on the displacement of the magnetic field source relative to the dispersed phase supply connector horizontally along the channel axis are obtained.

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环形磁铁非均相磁场中微通道磁性流体中液滴的形成与动力学
在环形磁铁的不均匀磁场作用下,研究了磁性流体中的非磁性液滴在微通道中的动态,微通道具有流动聚焦结构。研究了两种类型的多相系统:"油包水"、"水包油 "和 "水包油 "的非磁性乳液,以及磁性流体作为连续相的水包油磁性乳液。对产生的非磁性夹杂物的大小与连续磁性相的流速和磁场源相对于分散相供应连接器沿通道轴线水平方向的位移的关系进行了表征。
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来源期刊
Bulletin of the Russian Academy of Sciences: Physics
Bulletin of the Russian Academy of Sciences: Physics Physics and Astronomy-Physics and Astronomy (all)
CiteScore
0.90
自引率
0.00%
发文量
251
期刊介绍: Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular,  letters  to  the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics  focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.
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