Measurements of sheet flow transport in acceleration-skewed oscillatory flow and comparison with practical formulations

Dominic A. Van Der A (Corresponding Author), Thomas O'Donoghue, Jan S. Ribberink

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Near-bed oscillatory flows with acceleration skewness are characteristic of steep and breaking waves in shallow water. In order to isolate the effects of acceleration skewness on sheet flow sand transport, new experiments are carried out in the Aberdeen Oscillatory Flow Tunnel. The experiments have produced a
dataset of net transport rates for full-scale oscillatory flows with varying degrees of acceleration skewness and three sand sizes. The new data confirm previous research that net transport in acceleration-skewed flow is non-zero, is always in the direction of the largest acceleration and increases with increasing acceleration
skewness. Large transport rates for the fine sand conditions suggest that phase lag effects play an important role in augmenting positive net transport. A comparison of the new experimental data with a number of practical sand transport formulations that incorporate acceleration skewness shows that none of the formulations performs well in predicting the measured net transport rates for both the fine and the coarser sands. The new experimental data can be used to further develop practical sand transport formulations to better account for acceleration skewness.
Original languageEnglish
Pages (from-to)331-342
Number of pages12
JournalCoastal Engineering
Volume57
Issue number3
DOIs
Publication statusPublished - Mar 2010

Fingerprint

Sand
Tunnels
Experiments
Water

Keywords

  • sediment transport
  • sheet flow
  • oscillatory flow
  • sawtooth waves
  • acceleration skewness
  • transport formulation

Cite this

@article{8d0fdc8e01f247bc9d4b4e7d6e058816,
title = "Measurements of sheet flow transport in acceleration-skewed oscillatory flow and comparison with practical formulations",
abstract = "Near-bed oscillatory flows with acceleration skewness are characteristic of steep and breaking waves in shallow water. In order to isolate the effects of acceleration skewness on sheet flow sand transport, new experiments are carried out in the Aberdeen Oscillatory Flow Tunnel. The experiments have produced a dataset of net transport rates for full-scale oscillatory flows with varying degrees of acceleration skewness and three sand sizes. The new data confirm previous research that net transport in acceleration-skewed flow is non-zero, is always in the direction of the largest acceleration and increases with increasing acceleration skewness. Large transport rates for the fine sand conditions suggest that phase lag effects play an important role in augmenting positive net transport. A comparison of the new experimental data with a number of practical sand transport formulations that incorporate acceleration skewness shows that none of the formulations performs well in predicting the measured net transport rates for both the fine and the coarser sands. The new experimental data can be used to further develop practical sand transport formulations to better account for acceleration skewness.",
keywords = "sediment transport, sheet flow, oscillatory flow, sawtooth waves, acceleration skewness, transport formulation",
author = "{Van Der A}, {Dominic A.} and Thomas O'Donoghue and Ribberink, {Jan S.}",
note = "A paid open access option is available for this journal. Voluntary deposit by author of pre-print allowed on Institutions open scholarly website and pre-print servers Voluntary deposit by author of authors post-print allowed on institutions open scholarly website including Institutional Repository Deposit due to Funding Body, Institutional and Governmental mandate only allowed where separate agreement between repository and publisher exists Set statement to accompany deposit Published source must be acknowledged Must link to journal home page or articles' DOI Publisher's version/PDF cannot be used Articles in some journals can be made Open Access on payment of additional charge NIH Authors articles will be submitted to PubMed Central after 12 months Authors who are required to deposit in subject-based repositories may also use Sponsorship Option",
year = "2010",
month = "3",
doi = "10.1016/j.coastaleng.2009.11.006",
language = "English",
volume = "57",
pages = "331--342",
journal = "Coastal Engineering",
issn = "0378-3839",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Measurements of sheet flow transport in acceleration-skewed oscillatory flow and comparison with practical formulations

AU - Van Der A, Dominic A.

AU - O'Donoghue, Thomas

AU - Ribberink, Jan S.

N1 - A paid open access option is available for this journal. Voluntary deposit by author of pre-print allowed on Institutions open scholarly website and pre-print servers Voluntary deposit by author of authors post-print allowed on institutions open scholarly website including Institutional Repository Deposit due to Funding Body, Institutional and Governmental mandate only allowed where separate agreement between repository and publisher exists Set statement to accompany deposit Published source must be acknowledged Must link to journal home page or articles' DOI Publisher's version/PDF cannot be used Articles in some journals can be made Open Access on payment of additional charge NIH Authors articles will be submitted to PubMed Central after 12 months Authors who are required to deposit in subject-based repositories may also use Sponsorship Option

PY - 2010/3

Y1 - 2010/3

N2 - Near-bed oscillatory flows with acceleration skewness are characteristic of steep and breaking waves in shallow water. In order to isolate the effects of acceleration skewness on sheet flow sand transport, new experiments are carried out in the Aberdeen Oscillatory Flow Tunnel. The experiments have produced a dataset of net transport rates for full-scale oscillatory flows with varying degrees of acceleration skewness and three sand sizes. The new data confirm previous research that net transport in acceleration-skewed flow is non-zero, is always in the direction of the largest acceleration and increases with increasing acceleration skewness. Large transport rates for the fine sand conditions suggest that phase lag effects play an important role in augmenting positive net transport. A comparison of the new experimental data with a number of practical sand transport formulations that incorporate acceleration skewness shows that none of the formulations performs well in predicting the measured net transport rates for both the fine and the coarser sands. The new experimental data can be used to further develop practical sand transport formulations to better account for acceleration skewness.

AB - Near-bed oscillatory flows with acceleration skewness are characteristic of steep and breaking waves in shallow water. In order to isolate the effects of acceleration skewness on sheet flow sand transport, new experiments are carried out in the Aberdeen Oscillatory Flow Tunnel. The experiments have produced a dataset of net transport rates for full-scale oscillatory flows with varying degrees of acceleration skewness and three sand sizes. The new data confirm previous research that net transport in acceleration-skewed flow is non-zero, is always in the direction of the largest acceleration and increases with increasing acceleration skewness. Large transport rates for the fine sand conditions suggest that phase lag effects play an important role in augmenting positive net transport. A comparison of the new experimental data with a number of practical sand transport formulations that incorporate acceleration skewness shows that none of the formulations performs well in predicting the measured net transport rates for both the fine and the coarser sands. The new experimental data can be used to further develop practical sand transport formulations to better account for acceleration skewness.

KW - sediment transport

KW - sheet flow

KW - oscillatory flow

KW - sawtooth waves

KW - acceleration skewness

KW - transport formulation

U2 - 10.1016/j.coastaleng.2009.11.006

DO - 10.1016/j.coastaleng.2009.11.006

M3 - Article

VL - 57

SP - 331

EP - 342

JO - Coastal Engineering

JF - Coastal Engineering

SN - 0378-3839

IS - 3

ER -