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A general formula for noncohesive suspended sediment transport

Camenen, Benoit LU and Larson, Magnus LU (2008) In Journal of Coastal Research 24(3). p.615-627
Abstract
A simple and robust suspended load transport formula for noncohesive sediment is presented for application to river, estuarine, and coastal environments with the use of depth-averaged models. The formula is based on an exponential profile for the concentration and assumes a constant velocity over depth to simplify the calculations. These assumptions were validated with a large data set, including data with a steady current, wave and current interaction, and breaking waves. The formula has two parameters: the mean sediment diffusivity over depth and the bottom reference concentration. The sediment diffusivity is estimated assuming a linear combination of mixing because of breaking waves and the energy dissipation in the bottom boundary... (More)
A simple and robust suspended load transport formula for noncohesive sediment is presented for application to river, estuarine, and coastal environments with the use of depth-averaged models. The formula is based on an exponential profile for the concentration and assumes a constant velocity over depth to simplify the calculations. These assumptions were validated with a large data set, including data with a steady current, wave and current interaction, and breaking waves. The formula has two parameters: the mean sediment diffusivity over depth and the bottom reference concentration. The sediment diffusivity is estimated assuming a linear combination of mixing because of breaking waves and the energy dissipation in the bottom boundary layer from the mean current, waves, or both. The bottom reference concentration is a function of the Shields parameter. Overall, the formula developed in this study yields the best agreement with the compiled data set compared with a number of existing formulas for estimating the suspended load. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
waves, breaking waves, noncohesive, sediment, current, diffusion parameter, reference concentration, profile, suspended load, concentration
in
Journal of Coastal Research
volume
24
issue
3
pages
615 - 627
publisher
Coastal Education and Research Foundation
external identifiers
  • wos:000256120800007
  • scopus:44649141847
ISSN
0749-0208
DOI
10.2112/06-0694.1
language
English
LU publication?
yes
id
c41e33fd-1d85-47bc-9aca-b11f50a9c5a6 (old id 1202032)
date added to LUP
2008-09-15 13:58:24
date last changed
2017-11-12 03:35:25
@article{c41e33fd-1d85-47bc-9aca-b11f50a9c5a6,
  abstract     = {A simple and robust suspended load transport formula for noncohesive sediment is presented for application to river, estuarine, and coastal environments with the use of depth-averaged models. The formula is based on an exponential profile for the concentration and assumes a constant velocity over depth to simplify the calculations. These assumptions were validated with a large data set, including data with a steady current, wave and current interaction, and breaking waves. The formula has two parameters: the mean sediment diffusivity over depth and the bottom reference concentration. The sediment diffusivity is estimated assuming a linear combination of mixing because of breaking waves and the energy dissipation in the bottom boundary layer from the mean current, waves, or both. The bottom reference concentration is a function of the Shields parameter. Overall, the formula developed in this study yields the best agreement with the compiled data set compared with a number of existing formulas for estimating the suspended load.},
  author       = {Camenen, Benoit and Larson, Magnus},
  issn         = {0749-0208},
  keyword      = {waves,breaking waves,noncohesive,sediment,current,diffusion parameter,reference concentration,profile,suspended load,concentration},
  language     = {eng},
  number       = {3},
  pages        = {615--627},
  publisher    = {Coastal Education and Research Foundation},
  series       = {Journal of Coastal Research},
  title        = {A general formula for noncohesive suspended sediment transport},
  url          = {http://dx.doi.org/10.2112/06-0694.1},
  volume       = {24},
  year         = {2008},
}