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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) FULL PAPERS : THEME 3- SEDIMENT MANAGEMENT AND MORPHODYNAMICS : INCIPIENT MOTION AND BED LOAD TRANSPORT OF NON-UNIFORM SEDIMENT
INCIPIENT MOTION AND BED LOAD TRANSPORT OF NON-UNIFORM SEDIMENT
Author : HUANG TINGJIE , , LU YONGJUN , LU YAN
This study explores characteristics of incipient motion and transport of non-uniform sediments analytically
and experimentally. A review of published studies on non-uniform sediment transport is first submitted for better
understand the state-of-the-art in this area of research. A new formula to calculate the critical shear stress and another
to predict frictional bed load transport rate of non-uniform bed materials has been proposed with the aid of experiments.
A modification of Wu et al.ís formula to calculate the critical shear stress of incipient motion of non-uniform was
proposed. After that, a new formula to calculate the critical shear stress of individual fractions of non-uniform sediment
was established, considering factors of grain size and gradation of bed materials and the different threshold of incipient
motion for uniform sediment with various diameters. A new fractional non-uniform sediment bed load transport formula
based on energy balance theory was proposed. A wide range of laboratory and field data agree well with this theoretical
equation. Good agreement is achieved with the newly proposed formula for uniform sediment.
File Size : 717,122 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 3- SEDIMENT MANAGEMENT AND MORPHODYNAMICS
Date Published : 18/04/2016
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