Numerical simulation on mean flow past a circular cylinder based on the lattice Boltzmann method

doi:10.4028/www.scientific.net/AMM.105-107.2307

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Numerical simulation on mean flow past a circular cylinder based on the lattice Boltzmann method
	Yu, Jianping; Yu, Shurong; Liu, Xingwang
	2012
会议日期	October 21, 2011 - October 23, 2011
会议地点	Shanghai, China
关键词	Air Circular cylinders Drag Experiments Numerical methods Structural design Vortex flow Computational fluid dynamics methods Experiment data Lattice Boltzmann method LBM Mean flow Numerical simulatio Re numbers Trailing vortex
卷号	105-107
DOI	10.4028/www.scientific.net/AMM.105-107.2307
页码	2307-2310
英文摘要	Lattice Boltzmann methods (LBM) have become an alternative to conventional computational fluid dynamics (CFD) methods for various systems. In this paper, flow field of mean flow past a circular cylinder was simulated based on the lattice Boltzmann method. The streamline of air past the cylinder illuminated that the fluid adhere on the boundary and doesn't separate from the surface of cylinder when Re number less than 5. When Re number equal 40, flow separated to form a pair of recirculating eddies can be observed. With the Re number increasing, the trailing vortex length is growth accordingly. When Re number come up to 80, the trailing vortex begin to shed regularly. This result is consistent with the experiment data. Drag coefficient that fluid act on the surface of cylinder was calculated. The calculated results were same as the experiment data. Simulation indicate that LBM can simulate the vortex taking place and shedding effectively. © (2012) Trans Tech Publications.
会议录	Applied Mechanics and Materials
会议录出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种	英语
ISSN号	16609336
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115974]
专题	石油化工学院
作者单位	School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Yu, Jianping,Yu, Shurong,Liu, Xingwang. Numerical simulation on mean flow past a circular cylinder based on the lattice Boltzmann method[C]. 见:. Shanghai, China. October 21, 2011 - October 23, 2011.