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(Article of periodic en Anglais - 2013)

Document title

A new statistical model for threshold friction velocity of sand particle motion

Authors(s) and Affiliation(s)

DUAN S. (1) ; CHENG N. (1) ; XIE L. (1) ;
(1) Key Lab. of Mechanics on Environment and Disaster in Western China, the Ministry of Education of China, School of Civil Engineering and Mechanics, Univ., Lanzhou, CHINE

Abstract

A theoretical formulation of threshold friction velocity of sand particles is established by considering the equilibrium of moment forces acting on an irregular particle following Bagnold's scheme. Owing to the statistical nature of the microstructure of soil surface, of the particle shape and of positions in the bed, the threshold friction velocity is random. Based on the probability theory of multi-dimension random variable, the probability of the threshold friction velocity, its mean value and standard deviation are calculated. The mean value and standard deviation are fitted as functions of sand particle's diameter. A formula of "wet" threshold friction velocity is also given

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 104 [pp. 32-38]

Bibliographic references : 27 ref.

Collation : 7 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.04.009

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27624620 : Permanent link - XML version
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