The University of Southampton
University of Southampton Institutional Repository

Delay or removal of aneurysm formation in the Anaconda wave energy extraction device

Delay or removal of aneurysm formation in the Anaconda wave energy extraction device
Delay or removal of aneurysm formation in the Anaconda wave energy extraction device
Any distensible tube inflated beyond a critical pressure will experience aneurysm formation. The Anaconda wave energy device consists of a pressurised flooded tube, which when excited with an external incident wave of appropriate frequency, for the set inflation pressure, permits generation of internal bulge waves that provide the mechanism for more efficient wave energy extraction. The distensible tube must be designed to have structural integrity and to facilitate the bulge wave matching the incident wave. The bulge wave speed is governed by internal fluid density and tube distensibility. The latter is readily shown to be dependent upon volume-pressure gradient within the tube. With application of a displacement-pressure based finite element formulation the likelihood of aneurysm and its delay or avoidance can be investigated. The strain energy functions selected for use with the finite element analysis are the Yeoh and third-order Ogden model as these formulations have been previously shown by the authors to satisfy the required Maxwell equal area rule and provide the most consistent predictions when using different mixes of experimental stress-strain data. After summarising a representative set of known wave energy extraction devices, to appreciate how different Anaconda is, the paper looks at the extent and mode of deployment of an outer inextensible reinforcement to provide bulge waves of appropriate speed whilst also overcoming the onset of aneurysms within the Anaconda tube.
0960-1481
104-119
Bucchi, Andrea
9a30ab33-8b04-4bca-ab3a-4e42723f8215
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178
Bucchi, Andrea
9a30ab33-8b04-4bca-ab3a-4e42723f8215
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178

Bucchi, Andrea and Hearn, Grant (2013) Delay or removal of aneurysm formation in the Anaconda wave energy extraction device. Renewable Energy, 55, 104-119. (doi:10.1016/j.renene.2012.10.050).

Record type: Article

Abstract

Any distensible tube inflated beyond a critical pressure will experience aneurysm formation. The Anaconda wave energy device consists of a pressurised flooded tube, which when excited with an external incident wave of appropriate frequency, for the set inflation pressure, permits generation of internal bulge waves that provide the mechanism for more efficient wave energy extraction. The distensible tube must be designed to have structural integrity and to facilitate the bulge wave matching the incident wave. The bulge wave speed is governed by internal fluid density and tube distensibility. The latter is readily shown to be dependent upon volume-pressure gradient within the tube. With application of a displacement-pressure based finite element formulation the likelihood of aneurysm and its delay or avoidance can be investigated. The strain energy functions selected for use with the finite element analysis are the Yeoh and third-order Ogden model as these formulations have been previously shown by the authors to satisfy the required Maxwell equal area rule and provide the most consistent predictions when using different mixes of experimental stress-strain data. After summarising a representative set of known wave energy extraction devices, to appreciate how different Anaconda is, the paper looks at the extent and mode of deployment of an outer inextensible reinforcement to provide bulge waves of appropriate speed whilst also overcoming the onset of aneurysms within the Anaconda tube.

Text
__soton.ac.uk_ude_personalfiles_users_asv1a09_mydesktop_GEH Eprints_Renewable energy paper.pdf - Version of Record
Restricted to Repository staff only
Request a copy

More information

e-pub ahead of print date: 19 July 2013
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 351807
URI: http://eprints.soton.ac.uk/id/eprint/351807
ISSN: 0960-1481
PURE UUID: de4e1c1d-e930-4b00-aa97-b0138b8429a1

Catalogue record

Date deposited: 29 Apr 2013 13:45
Last modified: 07 Jan 2022 21:26

Export record

Altmetrics

Contributors

Author: Andrea Bucchi
Author: Grant Hearn

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×