{"title":"利用横向磁场控制铁流体润滑剂的平行表面挤压膜轴承","authors":"Rajesh C. Shah","doi":"10.1140/epjp/s13360-024-05812-w","DOIUrl":null,"url":null,"abstract":"<div><p>Parallel surface squeeze film bearing design system, formed by two parallel surfaces with the upper surface having squeeze velocity and the lower one stationary, is numerically discussed. The modified Reynolds equation is derived using ferrohydrodynamic theory by Shliomis with static locally-dependent (spatially varying) as well as static constant transversely (vertically) strong magnetic fields, and continuity equation. Using this equation, expressions for film-pressure distribution and load-carrying capacity are derived. The results for dimensionless film-pressure distribution (<i>P</i>) and load-carrying capacity (<span>\\(\\overline{W}\\)</span>) are calculated for different parameters and discussed. Some comparisons of these results are also made when conventional lubricant is used. Summary of the results show better performance of the system when ferrofluid lubricant is used.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"139 11","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Parallel surface squeeze film bearing using ferrofluid lubricant controlled by transverse magnetic fields\",\"authors\":\"Rajesh C. Shah\",\"doi\":\"10.1140/epjp/s13360-024-05812-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Parallel surface squeeze film bearing design system, formed by two parallel surfaces with the upper surface having squeeze velocity and the lower one stationary, is numerically discussed. The modified Reynolds equation is derived using ferrohydrodynamic theory by Shliomis with static locally-dependent (spatially varying) as well as static constant transversely (vertically) strong magnetic fields, and continuity equation. Using this equation, expressions for film-pressure distribution and load-carrying capacity are derived. The results for dimensionless film-pressure distribution (<i>P</i>) and load-carrying capacity (<span>\\\\(\\\\overline{W}\\\\)</span>) are calculated for different parameters and discussed. Some comparisons of these results are also made when conventional lubricant is used. Summary of the results show better performance of the system when ferrofluid lubricant is used.</p></div>\",\"PeriodicalId\":792,\"journal\":{\"name\":\"The European Physical Journal Plus\",\"volume\":\"139 11\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-11-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The European Physical Journal Plus\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1140/epjp/s13360-024-05812-w\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal Plus","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epjp/s13360-024-05812-w","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Parallel surface squeeze film bearing using ferrofluid lubricant controlled by transverse magnetic fields
Parallel surface squeeze film bearing design system, formed by two parallel surfaces with the upper surface having squeeze velocity and the lower one stationary, is numerically discussed. The modified Reynolds equation is derived using ferrohydrodynamic theory by Shliomis with static locally-dependent (spatially varying) as well as static constant transversely (vertically) strong magnetic fields, and continuity equation. Using this equation, expressions for film-pressure distribution and load-carrying capacity are derived. The results for dimensionless film-pressure distribution (P) and load-carrying capacity (\(\overline{W}\)) are calculated for different parameters and discussed. Some comparisons of these results are also made when conventional lubricant is used. Summary of the results show better performance of the system when ferrofluid lubricant is used.
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The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences.
The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.
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