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Comparison of 4- and 5-beam acoustic Doppler current profiler configurations for measurement of turbulent kinetic energy / Michael Togneri; Dale Jones; Simon Neill; Matt Lewis; Sophie Ward; Marco Piano; Ian Masters

Energy Procedia, Volume: 125, Pages: 260 - 267

Swansea University Authors: Michael, Togneri, Ian, Masters

Abstract

Acoustic Doppler current profilers (ADCPs) are commonly used to assess mean currents and turbulence at energetic sites. Since 2014, five-beam ADCP configurations have become more common, but conventional analysis of turbulence properties is still based on the four-beam Janus configuration. We use me...

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Published in: Energy Procedia
ISSN: 1876-6102
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa35287
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Abstract: Acoustic Doppler current profilers (ADCPs) are commonly used to assess mean currents and turbulence at energetic sites. Since 2014, five-beam ADCP configurations have become more common, but conventional analysis of turbulence properties is still based on the four-beam Janus configuration. We use measurements from a single site to investigate improved estimates of turbulent kinetic energy (TKE) that are made possible by the addition of a fifth vertical beam. We conclude that four-beam estimates of TKE are suitable in most cases, and exhibit lower variance than five-beam estimates, but are more prone to contamination by wave activity.
Keywords: ADCP; Turbulence; Tidal energy; Ocean current
College: College of Engineering
Start Page: 260
End Page: 267