Numerical study of natural convection in a horizontal cylinder filled with water-based alumina nanofluid

	Numerical study of natural convection in a horizontal cylinder filled with water-based alumina nanofluid
	Meng, Xiangyin 1; Li, Yan 2
刊名	nanoscale research letters
	2015-03-19
卷号	10
关键词	Nanofluid Natural heat convection OpenFOAM Temperature dependent solver
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.
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
关键词[WOS]	turbulent forced-convection ; heat-transfer enhancement ; enclosure ; flow ; models
收录类别	SCI
语种	英语
WOS记录号	WOS:000351712000001
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/146098]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
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
推荐引用方式 GB/T 7714	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.
APA	Meng, Xiangyin,&Li, Yan.(2015).Numerical study of natural convection in a horizontal cylinder filled with water-based alumina nanofluid.nanoscale research letters,10.
MLA	Meng, Xiangyin,et al."Numerical study of natural convection in a horizontal cylinder filled with water-based alumina nanofluid".nanoscale research letters 10(2015).