eCite Digital Repository

PIV investigation of 3-dimensional flow within an oscillating water column

Citation

Mitchell Ferguson, T and MacFarlane, G and Fleming, A and Penesis, I, PIV investigation of 3-dimensional flow within an oscillating water column, International Journal of Marine Energy, 11 pp. 120-131. ISSN 2214-1669 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier Ltd.

DOI: doi:10.1016/j.ijome.2015.06.004

Abstract

A comprehensive understanding of the flow within an oscillating water column (OWC) is essential to improving the efficiency of the underwater geometry of this type of wave energy converter. This study aims to investigate the impact of the sidewalls on the flow and the changes in flow across the device. Scale model experiments were performed on a forward facing bent duct OWC to generate two-dimensional (2D) particle image velocimetry (PIV) velocity fields at four longitudinal planes across the width of the device. These fields showed there was substantial variation in the flow at the different planes, with a transfer of flow from the central planes during inflow towards the sidewalls during outflow, in addition to the outer planes spending a greater proportion of time in outflow and vice versa. This identified locations at which there is an even distribution between inflow and outflow. Divergence of the velocity fields was calculated to identify non-2D aspects to the flow revealing a vortex forming on the inner lip of the sidewall demonstrating the devices ability to utilise the volume outside of the extents of the sidewalls to generate power. This study has shown there are significant three-dimensional aspects to the flow within and around the device which must be considered when designing the underwater geometry.

Item Details

Item Type:Refereed Article
Keywords:Oscillating Water Column (OWC), Particle Image Velocimetry (PIV), three-dimensional (3D), divergence
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Maritime Engineering not elsewhere classified
Objective Division:Energy
Objective Group:Renewable Energy
Objective Field:Wave Energy
Author:Mitchell Ferguson, T (Mr Thomas Mitchell Ferguson)
Author:MacFarlane, G (Associate Professor Gregor MacFarlane)
Author:Fleming, A (Dr Alan Fleming)
Author:Penesis, I (Associate Professor Irene Penesis)
ID Code:106216
Year Published:2015
Web of Science® Times Cited:1
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2016-02-02
Last Modified:2017-11-03
Downloads:0

Repository Staff Only: item control page