Closed form solution for threshold velocity for initiation of sediment motion under waves
(2007) 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes- Abstract
- The present paper presents a rational expression for the initiation of motion for non-cohesive sediment under rough turbulent wave conditions. Previously proposed relationships for the initiation of motion are examined as well as laboratory measurements corresponding to fully rough turbulent boundary layers (which is normally the case under prototype conditions). By combining the modified Shields criterion as proposed by Bagnold with the wave friction factor, f<sub>w</sub>, from Jonsson, an easily applied criterion for the threshold velocity for incipient motion under rough turbulent conditions. The new relationship is formulated as U<sub>w,cr</sub>=4<sub>cr</sub>[1.1log... (More)
- The present paper presents a rational expression for the initiation of motion for non-cohesive sediment under rough turbulent wave conditions. Previously proposed relationships for the initiation of motion are examined as well as laboratory measurements corresponding to fully rough turbulent boundary layers (which is normally the case under prototype conditions). By combining the modified Shields criterion as proposed by Bagnold with the wave friction factor, f<sub>w</sub>, from Jonsson, an easily applied criterion for the threshold velocity for incipient motion under rough turbulent conditions. The new relationship is formulated as U<sub>w,cr</sub>=4<sub>cr</sub>[1.1log <sub>10</sub>(<sub>cr</sub>T/(πd<sub>50</sub>))-0.08]<sup>1/0.9</s up>. Predictions with the new criterion are shown to be in good agreement with measurements over the full range of typically encountered engineering conditions. © 2007 ASCE. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/643471
- author
- Hanson, Hans LU and Camenen, Benoit LU
- organization
- publishing date
- 2007
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Threshold velocity, Turbulent wave conditions, Sediment motion, Laboratory measurements
- host publication
- Coastal Sediments '07
- publisher
- American Society of Civil Engineers (ASCE)
- conference name
- 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes
- conference location
- New Orleans, LA, United States
- conference dates
- 2007-05-13 - 2007-05-17
- external identifiers
-
- scopus:34548562273
- DOI
- 10.1061/40926(239)2
- language
- English
- LU publication?
- yes
- id
- b0ca76d6-7a7a-40c5-a3c9-25e6764b7734 (old id 643471)
- date added to LUP
- 2016-04-04 11:33:35
- date last changed
- 2022-03-23 17:48:36
@inproceedings{b0ca76d6-7a7a-40c5-a3c9-25e6764b7734,
abstract = {{The present paper presents a rational expression for the initiation of motion for non-cohesive sediment under rough turbulent wave conditions. Previously proposed relationships for the initiation of motion are examined as well as laboratory measurements corresponding to fully rough turbulent boundary layers (which is normally the case under prototype conditions). By combining the modified Shields criterion as proposed by Bagnold with the wave friction factor, f<sub>w</sub>, from Jonsson, an easily applied criterion for the threshold velocity for incipient motion under rough turbulent conditions. The new relationship is formulated as U<sub>w,cr</sub>=4<sub>cr</sub>[1.1log <sub>10</sub>(<sub>cr</sub>T/(πd<sub>50</sub>))-0.08]<sup>1/0.9</s up>. Predictions with the new criterion are shown to be in good agreement with measurements over the full range of typically encountered engineering conditions. © 2007 ASCE.}},
author = {{Hanson, Hans and Camenen, Benoit}},
booktitle = {{Coastal Sediments '07}},
keywords = {{Threshold velocity; Turbulent wave conditions; Sediment motion; Laboratory measurements}},
language = {{eng}},
publisher = {{American Society of Civil Engineers (ASCE)}},
title = {{Closed form solution for threshold velocity for initiation of sediment motion under waves}},
url = {{http://dx.doi.org/10.1061/40926(239)2}},
doi = {{10.1061/40926(239)2}},
year = {{2007}},
}