Distribution function of vertical lift-off velocity of sand particles - A generalized form

	Distribution function of vertical lift-off velocity of sand particles - A generalized form
	Wu, JJ; He, LH; Yan, GH; He, LH (reprint author), Lanzhou Univ, Sch Management, Lanzhou 730000, Peoples R China.
	2007
会议日期	OCT 14-16, 2006
会议地点	Beijing, PEOPLES R CHINA
关键词	vertical lift-off velocity distribution sand particle statistical inference Weibull distribution
页码	100-107
英文摘要	Collision between the impacting particles and the sand surface is understood to be critical in the momentum transformations necessary for repeated saltation. This process could be described by the lift-off velocity distribution of particles ejected from the sand surface. On the basis of the experimental data for the lift-off velocity of sand particles obtained by Dong et al.. the most probable form of the vertical lift-off velocity distribution function is given out by the statistical inference method, i.e. Kolmogorov-Smirnov goodness of fit test. The statistical result showed that the distribution function of vertical lift-off velocities conforms better to Weibull distribution than to the normal, log-normal, gamma and exponential functions. A general explicit form of an empirical equation is proposed to describe the relationship among the vertical lift-off velocity, the size of sand particles as well as the wind velocity.
会议录	PRINCIPLES AND PRACTICES OF DESERTIFICATION CONTROL, VOL I
会议录出版地	BEIJING
学科主题	Engineering
语种	英语
WOS记录号	WOS:000251301500016
内容类型	会议论文
源URL	[http://ir.lzu.edu.cn/handle/262010/184063]
专题	土木工程与力学学院_会议论文
通讯作者	He, LH (reprint author), Lanzhou Univ, Sch Management, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Wu, JJ,He, LH,Yan, GH,et al. Distribution function of vertical lift-off velocity of sand particles - A generalized form[C]. 见:. Beijing, PEOPLES R CHINA. OCT 14-16, 2006.