{"title":"Viscous Friction of a Ferrofluid in the Coaxial Gap between Cylindrical Walls Being in Uniform Rectilinear Relative Motion","authors":"A. S. Ivanov, M. A. Koskov, S. A. Somov","doi":"10.1134/S1062873824707256","DOIUrl":null,"url":null,"abstract":"<p>The viscous friction of a ferrofluid in the coaxial gap between a stationary outer nonmagnetic tube and a uniformly and rectilinearly moving inner cylindrical permanent magnet was investigated experimentally and theoretically. An analytical expression for the effective coefficient of friction was proposed within the framework of the model concepts of the Couette–Poiseuille flow profile with zero flow rate and was confirmed in a laboratory experiment.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 7","pages":"1158 - 1165"},"PeriodicalIF":0.4800,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Russian Academy of Sciences: Physics","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1062873824707256","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 0
Abstract
The viscous friction of a ferrofluid in the coaxial gap between a stationary outer nonmagnetic tube and a uniformly and rectilinearly moving inner cylindrical permanent magnet was investigated experimentally and theoretically. An analytical expression for the effective coefficient of friction was proposed within the framework of the model concepts of the Couette–Poiseuille flow profile with zero flow rate and was confirmed in a laboratory experiment.
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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