Shear velocity criterion for incipient motion of sediment

Water Science and Engineering
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Abstract

The prediction of incipient motion has had great importance to the theory of sediment transport. The most commonly used methods are based on the concept of critical shear stress and employ an approach similar, or identical, to the Shields diagram. An alternative method that uses the movability number, defined as the ratio of the shear velocity to the particle’s settling velocity, was employed in this study. A large amount of experimental data were used to develop an empirical incipient motion criterion based on the movability number. It is shown that this approach can provide a simple and accurate method of computing the threshold condition for sediment motion.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Shear velocity criterion for incipient motion of sediment
Series title Water Science and Engineering
DOI 10.3882/j.issn.1674-2370.2014.02.006
Volume 7
Issue 2
Year Published 2014
Language English
Publisher Hohai University, Nanjing
Publisher location Nanjing, China
Contributing office(s) National Research Program - Central Branch
First page 183
Last page 193
Online Only (Y/N) N
Additional Online Files (Y/N) N