Observations of wave pump efficiency

Nielsen, Peter, Guard, Paul A., Callaghan, David P. and Baldock, Tom E. (2008) Observations of wave pump efficiency. Coastal Engineering, 55 1: 69-72. doi:10.1016/j.coastaleng.2007.07.003


Author Nielsen, Peter
Guard, Paul A.
Callaghan, David P.
Baldock, Tom E.
Title Observations of wave pump efficiency
Journal name Coastal Engineering   Check publisher's open access policy
ISSN 0378-3839
Publication date 2008
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.coastaleng.2007.07.003
Volume 55
Issue 1
Start page 69
End page 72
Total pages 4
Editor H. F. Burcharth
Place of publication Amstedam, Netherlands
Publisher Elsevier BV
Collection year 2009
Language eng
Subject 960902 Coastal and Estuarine Land Management
0905 Civil Engineering
CX
Abstract Currently available data on wave pump efficiency is reviewed. The obtainable efficiency is an important consideration in the design of practical devices for the extraction of wave energy and the analysis of natural systems (e.g., coral flats and rip currents). We find that the peak efficiency is 0.5 for very steep ( 40–45°) ramps where the waves break over the top of the ramp. For flatter (< 30°) ramps, the breaking process is more gradual and the peak efficiency is less than 0.1. We have identified natural atoll lagoon systems where the flushing is wave driven and successfully modeled it as driven by a wave pump. The same is the case for rip currents. For both of these natural systems, the pump efficiency is around 0.035. In addition a numerical swash model is used to estimate wave pump efficiency and is seen to match the experimental results for natural systems or breaking wave scenario.
Keyword Wave pumping
Wave overtopping
Swash
Atoll flushing
Rip currents
Wave energy
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Civil Engineering Publications
 
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Created: Fri, 27 Mar 2009, 10:55:54 EST by Katherine Montagu on behalf of School of Civil Engineering