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题名: Numerical study of natural convection in a horizontal cylinder filled with water-based alumina nanofluid
作者: Meng, Xiangyin1;  Li, Yan2
关键词: Nanofluid ;  Natural heat convection ;  OpenFOAM ;  Temperature dependent solver
刊名: NANOSCALE RESEARCH LETTERS
发表日期: 2015-03-19
DOI: 10.1186/s11671-015-0847-x
卷: 10
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: Natural heat convection of water-based alumina (Al2O3/water) nanofluids (with volume fraction 1% and 4%) in a horizontal cylinder is numerically investigated. The whole three-dimensional computational fluid dynamics (CFD) procedure is performed in a completely open-source way. Blender, enGrid, OpenFOAM and ParaView are employed for geometry creation, mesh generation, case simulation and post process, respectively. Original solver 'buoyantBoussinesqSimpleFoam' is selected for the present study, and a temperature-dependent solver 'buoyantBoussinesqSimpleTDFoam' is developed to ensure the simulation is more realistic. The two solvers are used for same cases and compared to corresponding experimental results. The flow regime in these cases is laminar (Reynolds number is 150) and the Rayleigh number range is 0.7 x 10(7) similar to 5 x 10(7). By comparison, the average natural Nusselt numbers of water and Al2O3/water nanofluids are found to increase with the Rayleigh number. At the same Rayleigh number, the Nusselt number is found to decrease with nanofluid volume fraction. The temperature-dependent solver is found better for water and 1% Al2O3/water nanofluid cases, while the original solver is better for 4% Al2O3/water nanofluid cases. Furthermore, due to strong three-dimensional flow features in the horizontal cylinder, three-dimensional CFD simulation is recommended instead of two-dimensional simplifications.
关键词[WOS]: TURBULENT FORCED-CONVECTION ;  HEAT-TRANSFER ENHANCEMENT ;  ENCLOSURE ;  FLOW ;  MODELS
语种: 英语
WOS记录号: WOS:000351712000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146098
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Newcastle Univ, Sch Marine Sci & Technol, Res Grp Offshore Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Lab Mol Modeling & Design, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Meng, Xiangyin,Li, Yan. Numerical study of natural convection in a horizontal cylinder filled with water-based alumina nanofluid[J]. NANOSCALE RESEARCH LETTERS,2015,10.
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