Experimental Verification of Couette–Poiseuille Flow of a Magnetic Fluid Filling the Coaxial Gap between the Inner Magnetic and Outer Nonmagnetic Walls
{"title":"Experimental Verification of Couette–Poiseuille Flow of a Magnetic Fluid Filling the Coaxial Gap between the Inner Magnetic and Outer Nonmagnetic Walls","authors":"A. S. Ivanov, M. A. Koskov, S. A. Somov","doi":"10.1134/S1062873825711705","DOIUrl":null,"url":null,"abstract":"<p>An experimental investigation was made of the viscous friction of the coaxial layer of a magnetic fluid between the inner wall of a nonmagnetic tube and a cylindrical assembly of permanent magnets during translational motion of the latter. The results of measurements of friction coefficient were compared with the results of calculations within the framework of analytical models. It was shown that the model prohibiting the flow of the magnetic fluid from the gap gives the best estimate of the friction coefficient. Several series of experiments on laboratory models differing in geometrical dimensions and aspect ratio of magnetic bodies have accumulated experimental data confirming the type of Couette–Poiseuille hydrodynamic flow in the system under study.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 7","pages":"1058 - 1065"},"PeriodicalIF":0.4800,"publicationDate":"2025-07-16","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/S1062873825711705","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
An experimental investigation was made of the viscous friction of the coaxial layer of a magnetic fluid between the inner wall of a nonmagnetic tube and a cylindrical assembly of permanent magnets during translational motion of the latter. The results of measurements of friction coefficient were compared with the results of calculations within the framework of analytical models. It was shown that the model prohibiting the flow of the magnetic fluid from the gap gives the best estimate of the friction coefficient. Several series of experiments on laboratory models differing in geometrical dimensions and aspect ratio of magnetic bodies have accumulated experimental data confirming the type of Couette–Poiseuille hydrodynamic flow in the system under study.
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
