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Journal article 613 views 97 downloads

Comparison of 4- and 5-beam acoustic Doppler current profiler configurations for measurement of turbulent kinetic energy

Michael Togneri Orcid Logo, Dale Jones, Simon Neill, Matt Lewis, Sophie Ward, Marco Piano, Ian Masters Orcid Logo

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

Swansea University Authors: Michael Togneri Orcid Logo, Ian Masters Orcid Logo

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