Towards an Understanding of the Influence of Sedimentation on Colloidal Aggregation by Peclet Number

IMECH-IR > 力学所知识产出(1956-2008)

	Towards an Understanding of the Influence of Sedimentation on Colloidal Aggregation by Peclet Number
	Sun ZW(孙祉伟); Liu J(刘捷); Xu SH(徐升华); Sun, ZW (reprint author), Chinese Acad Sci, Inst Mech, NML, Beijing 100080, Peoples R China.
发表期刊	Chinese Physics Letters
	2005
卷号	22 期号:8 页码:2119-2122
ISSN	0256-307X
摘要	The Peclet number is a useful index to estimate the importance of sedimentation as compared to the Brownian motion. However, how to choose the characteristic length scale for the Peclet number evaluation is rather critical because the diffusion length increases as the square root of the time whereas the drifting length is linearly related to time. Our Brownian dynamics simulation shows that the degree of sedimentation influence on the coagulation decreases when the dispersion volume fraction increases. Therefore using a fixed length, such as the diameter of particle, as the characteristic length scale for Peclet number evaluation is not a good choice when dealing with the influence of sedimentation on coagulation. The simulations demonstrated that environmental factors in the coagulation process, such as dispersion volume fraction and size distribution, should be taken into account for more reasonable evaluation of the sedimentation influence.
学科领域	力学
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000231049100082
关键词[WOS]	PERIKINETIC COAGULATION ; RAPID COAGULATION ; PARTICLES ; GRAVITY ; DIFFUSION ; DISPERSION ; DENSITY ; SPHERES ; FLOW
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/16877
专题	力学所知识产出(1956-2008)
通讯作者	Sun, ZW (reprint author), Chinese Acad Sci, Inst Mech, NML, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Sun ZW,Liu J,Xu SH,et al. Towards an Understanding of the Influence of Sedimentation on Colloidal Aggregation by Peclet Number[J]. Chinese Physics Letters,2005,22,8,:2119-2122.
APA	孙祉伟,刘捷,徐升华,&Sun, ZW .(2005).Towards an Understanding of the Influence of Sedimentation on Colloidal Aggregation by Peclet Number.Chinese Physics Letters,22(8),2119-2122.
MLA	孙祉伟,et al."Towards an Understanding of the Influence of Sedimentation on Colloidal Aggregation by Peclet Number".Chinese Physics Letters 22.8(2005):2119-2122.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Towards an Understan（216KB）			开放获取	--	浏览下载