Numerical study on heavy rigid particle motion in a plane wake flow by spectral element method

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	Numerical study on heavy rigid particle motion in a plane wake flow by spectral element method
	Wu ZB(武作兵)
刊名	International Journal of Numerical Methods in Fluids
	2009
通讯作者邮箱	wuzb@lnm.imech.ac.cn
卷号	61 期号:5 页码:536-551
ISSN号	0271-2091
通讯作者	武作兵
合作状况	其它
中文摘要	Experimental particle dispersion patterns in a plane wake flow at a high Reynolds number have been predicted numerically by discrete vortex method (Phys. Fluids A 1992; 4:2244-2251; Int. J. Multiphase Flow 2000; 26:1583-1607). To address the particle motion at a moderate Reynolds number, spectral element method is employed to provide an instantaneous wake flow field for particle dynamics equations, which are solved to make a detail classification of the patterns in relation to the Stokes and Froude numbers. It is found that particle motion features only depend on the Stokes number at a high Froude number and depend on both numbers at a low Froude number. A ratio of the Stokes number to squared Froude number is introduced and threshold values of this parameter are evaluated that delineate the different regions of particle behavior. The parameter describes approximately the gravitational settling velocity divided by the characteristic velocity of wake flow. In order to present effects of particle density but preserve rigid sphere, hollow sphere particle dynamics in the plane wake flow is investigated. The evolution of hollow particle motion patterns for the increase of equivalent particle density corresponds to that of solid particle motion patterns for the decrease of particle size. Although the thresholds change a little, the parameter can still make a good qualitative classification of particle motion patterns as the inner diameter changes.
学科主题	流体力学
类目[WOS]	Computer Science, Interdisciplinary Applications ; Mathematics, Interdisciplinary Applications ; Mechanics ; Physics, Fluids & Plasmas
研究领域[WOS]	Computer Science ; Mathematics ; Mechanics ; Physics
关键词[WOS]	NAVIER-STOKES EQUATIONS ; VORTEX STREET FLOW ; SPHERICAL-PARTICLES ; DYNAMICS ; DISPERSION ; TRANSITION ; CYLINDER
收录类别	SCI
语种	英语
WOS记录号	WOS:000270840300004
公开日期	2009-12-29
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/33000]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Wu ZB. Numerical study on heavy rigid particle motion in a plane wake flow by spectral element method[J]. International Journal of Numerical Methods in Fluids,2009,61(5):536-551.
APA	武作兵.(2009).Numerical study on heavy rigid particle motion in a plane wake flow by spectral element method.International Journal of Numerical Methods in Fluids,61(5),536-551.
MLA	武作兵."Numerical study on heavy rigid particle motion in a plane wake flow by spectral element method".International Journal of Numerical Methods in Fluids 61.5(2009):536-551.