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Phase-lag effects in sheet flow transport

Camenen, B and Larson, Magnus LU (2006) In Coastal Engineering 53(5-6). p.531-542
Abstract
The inception of the sheet flow regime as well as the effects of the phase lag when the sheet flow regime is established were investigated for oscillatory flows and combined steady and oscillatory flows. A new criterion for the inception of sheet flow is proposed based on around 300 oscillatory flow cases from experiments. This criterion was introduced in the Camenen and Larson [Camenen, B., Larson, M., 2005. A bedload sediment transport formula for the nearshore. Estuarine, Coastal and Shelf Science 63, 249-260.] bed load formula in order to take into account phase-lag effects in the sheet flow regime. The modification of the Camenen and Larson formula significantly improves the overall agreement with data and yields a correct behavior in... (More)
The inception of the sheet flow regime as well as the effects of the phase lag when the sheet flow regime is established were investigated for oscillatory flows and combined steady and oscillatory flows. A new criterion for the inception of sheet flow is proposed based on around 300 oscillatory flow cases from experiments. This criterion was introduced in the Camenen and Larson [Camenen, B., Larson, M., 2005. A bedload sediment transport formula for the nearshore. Estuarine, Coastal and Shelf Science 63, 249-260.] bed load formula in order to take into account phase-lag effects in the sheet flow regime. The modification of the Camenen and Larson formula significantly improves the overall agreement with data and yields a correct behavior in relation to some of the main governing parameters, which are the median grain size d(50), the orbital wave velocity U-w, and the wave period T-w. The calibration of the new formula was based on more than 200 experimental data values on the net sediment transport rate for a full wave cycle. A conceptual model was also proposed to estimate the ratio between sediment transport rate with and without phase lag, (r(pl)=q(s,net)/q(s,net,phi=0)). This simple model provides accurate results and may be used together with any quasi-steady model for bed load transport. (C) 2005 Elsevier B.V. All tights reserved. (Less)
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
net sediment transport, bed, load, inception of sheet flow, phase-lag effects
in
Coastal Engineering
volume
53
issue
5-6
pages
531 - 542
publisher
Elsevier
external identifiers
  • wos:000236845500007
  • scopus:33645864647
ISSN
0378-3839
DOI
10.1016/j.coastaleng.2005.12.003
language
English
LU publication?
yes
id
a8a75fa9-4120-451f-a345-a9010dc411ef (old id 414139)
date added to LUP
2016-04-01 15:38:48
date last changed
2020-12-29 02:40:16
@article{a8a75fa9-4120-451f-a345-a9010dc411ef,
  abstract     = {The inception of the sheet flow regime as well as the effects of the phase lag when the sheet flow regime is established were investigated for oscillatory flows and combined steady and oscillatory flows. A new criterion for the inception of sheet flow is proposed based on around 300 oscillatory flow cases from experiments. This criterion was introduced in the Camenen and Larson [Camenen, B., Larson, M., 2005. A bedload sediment transport formula for the nearshore. Estuarine, Coastal and Shelf Science 63, 249-260.] bed load formula in order to take into account phase-lag effects in the sheet flow regime. The modification of the Camenen and Larson formula significantly improves the overall agreement with data and yields a correct behavior in relation to some of the main governing parameters, which are the median grain size d(50), the orbital wave velocity U-w, and the wave period T-w. The calibration of the new formula was based on more than 200 experimental data values on the net sediment transport rate for a full wave cycle. A conceptual model was also proposed to estimate the ratio between sediment transport rate with and without phase lag, (r(pl)=q(s,net)/q(s,net,phi=0)). This simple model provides accurate results and may be used together with any quasi-steady model for bed load transport. (C) 2005 Elsevier B.V. All tights reserved.},
  author       = {Camenen, B and Larson, Magnus},
  issn         = {0378-3839},
  language     = {eng},
  number       = {5-6},
  pages        = {531--542},
  publisher    = {Elsevier},
  series       = {Coastal Engineering},
  title        = {Phase-lag effects in sheet flow transport},
  url          = {http://dx.doi.org/10.1016/j.coastaleng.2005.12.003},
  doi          = {10.1016/j.coastaleng.2005.12.003},
  volume       = {53},
  year         = {2006},
}