B. Kanimozhi, M. Muthtamilselvan, Ziyad A. Alhussain
{"title":"形状因子对混合纳米流体填充圆柱形多孔环空中浮力和Marangoni对流的影响","authors":"B. Kanimozhi, M. Muthtamilselvan, Ziyad A. Alhussain","doi":"10.1007/s12217-023-10065-w","DOIUrl":null,"url":null,"abstract":"<div><p>The ongoing research numerically examines the impact of the nanoparticle shape factor on the coupled Marangoni and buoyancy convection in a cylindrical porous annular region saturated with Ag-MgO/water hybrid nanofluid with magnetic effects. The internal wall of the annulus is considered to be hot, while the external wall is believed to be cold. The inner cylinder is fitted with a thin circular heated disc. To solve the non-dimensional governing equations, the finite difference approach with ADI, central differencing, and SOR technique is used. The major goal of the current study is to analyze the impact of the various shape factors on the Marangoni convection, magnetic field and nanoparticle volume fraction in the cylindrical annulus. The current study reveals that the spherical shaped nanoparticle outperforms in all the cases and <span>\\(\\overline{Nu}\\)</span> hikes with the Marangoni number and declines with Hartmann number.</p></div>","PeriodicalId":707,"journal":{"name":"Microgravity Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of the Shape Factor on Combined Buoyancy and Marangoni Convection in a Hybrid Nanofluid Filled Cylindrical Porous Annulus\",\"authors\":\"B. Kanimozhi, M. Muthtamilselvan, Ziyad A. Alhussain\",\"doi\":\"10.1007/s12217-023-10065-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The ongoing research numerically examines the impact of the nanoparticle shape factor on the coupled Marangoni and buoyancy convection in a cylindrical porous annular region saturated with Ag-MgO/water hybrid nanofluid with magnetic effects. The internal wall of the annulus is considered to be hot, while the external wall is believed to be cold. The inner cylinder is fitted with a thin circular heated disc. To solve the non-dimensional governing equations, the finite difference approach with ADI, central differencing, and SOR technique is used. The major goal of the current study is to analyze the impact of the various shape factors on the Marangoni convection, magnetic field and nanoparticle volume fraction in the cylindrical annulus. The current study reveals that the spherical shaped nanoparticle outperforms in all the cases and <span>\\\\(\\\\overline{Nu}\\\\)</span> hikes with the Marangoni number and declines with Hartmann number.</p></div>\",\"PeriodicalId\":707,\"journal\":{\"name\":\"Microgravity Science and Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2023-08-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microgravity Science and Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12217-023-10065-w\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, AEROSPACE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microgravity Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s12217-023-10065-w","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, AEROSPACE","Score":null,"Total":0}
Impact of the Shape Factor on Combined Buoyancy and Marangoni Convection in a Hybrid Nanofluid Filled Cylindrical Porous Annulus
The ongoing research numerically examines the impact of the nanoparticle shape factor on the coupled Marangoni and buoyancy convection in a cylindrical porous annular region saturated with Ag-MgO/water hybrid nanofluid with magnetic effects. The internal wall of the annulus is considered to be hot, while the external wall is believed to be cold. The inner cylinder is fitted with a thin circular heated disc. To solve the non-dimensional governing equations, the finite difference approach with ADI, central differencing, and SOR technique is used. The major goal of the current study is to analyze the impact of the various shape factors on the Marangoni convection, magnetic field and nanoparticle volume fraction in the cylindrical annulus. The current study reveals that the spherical shaped nanoparticle outperforms in all the cases and \(\overline{Nu}\) hikes with the Marangoni number and declines with Hartmann number.
期刊介绍：
Microgravity Science and Technology – An International Journal for Microgravity and Space Exploration Related Research is a is a peer-reviewed scientific journal concerned with all topics, experimental as well as theoretical, related to research carried out under conditions of altered gravity.
Microgravity Science and Technology publishes papers dealing with studies performed on and prepared for platforms that provide real microgravity conditions (such as drop towers, parabolic flights, sounding rockets, reentry capsules and orbiting platforms), and on ground-based facilities aiming to simulate microgravity conditions on earth (such as levitrons, clinostats, random positioning machines, bed rest facilities, and micro-scale or neutral buoyancy facilities) or providing artificial gravity conditions (such as centrifuges).
Data from preparatory tests, hardware and instrumentation developments, lessons learnt as well as theoretical gravity-related considerations are welcome. Included science disciplines with gravity-related topics are:
− materials science
− fluid mechanics
− process engineering
− physics
− chemistry
− heat and mass transfer
− gravitational biology
− radiation biology
− exobiology and astrobiology
− human physiology
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