{"title":"On the Microscopic Flow Characteristics of Nanofluids by Molecular Dynamics Simulation on Couette Flow","authors":"W. Cui, Min-li Bai, Jizu Lv, X. Li","doi":"10.2174/1876973X01205010021","DOIUrl":"https://doi.org/10.2174/1876973X01205010021","url":null,"abstract":"Adding a small amount of nanoparticles to conventional fluids (nanofluids) has been proved to be an effective\u0000way for improving capability of heat transferring in base fluids. The change in micro structure of base fluids and micro\u0000motion of nanoparticles may be key factors for heat transfer enhancement of nanofluids. Therefore, it is essential to\u0000examine these mechanisms on microscopic level. The present work performed a Molecular Dynamics simulation on\u0000Couette flow of nanofluids and investigated the microscopic flow characteristics through visual observation and statistic\u0000analysis. It was found that the even-distributed liquid argon atoms near solid surfaces of nanoparticles could be seemed as\u0000a reform to base liquid and had contributed to heat transfer enhancement. In the process of Couette flow, nanoparticles\u0000moved quickly in the shear direction accompanying with motions of rotation and vibration in the other two directions.\u0000When the shearing velocity was increased, the motions of nanoparticles were strengthened significantly. The motions of\u0000nanoparticles could disturb the continuity of fluid and strengthen partial flowing around nanoparticles, and further\u0000enhanced heat transferring in nanofluids.","PeriodicalId":148208,"journal":{"name":"The Open Fuels & Energy Science Journal","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134428484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}