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Laboratory testing the Anaconda

Laboratory testing the Anaconda
Laboratory testing the Anaconda
Laboratory measurements are presented of the performance of the Anaconda, a wave energy converter comprising a submerged water-filled distensible tube aligned with the incident waves. Experiments were carried out at a scale of around 1:25 with a 250mm diameter tube, 7m long, constructed of rubber and fabric, terminating in a linear power take-off of adjustable impedance.

The paper presents some basic theory that leads to predictions of distensibility and bulge wave speed in a pressurised compound rubber and fabric tube, including the effects of inelastic sectors in the circumference, longitudinal tension, and the surrounding fluid. Results are shown to agree closely with measurements in still water.

The theory is developed further to provide a model for the propagation of bulges and power conversion in the Anaconda. In the presence of external water waves the theory identifies three distinct internal wave components and provides theoretical estimates of power capture. For the first time, these and other predictions of the behaviour of the Anaconda, a device unlike almost all other marine systems, are shown to be in remarkably close agreement with measurements.
1364-503X
403-424
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f
Heller, V.
e0c25be3-5a51-4101-9830-e7e66cd075ba
Farley, F.J.M.
a9ebf235-9575-4d8d-a11f-73ef49383a77
Hearn, G.E.
c1b2912b-fe5c-432c-aaa4-39c5eff75178
Rainey, R.C.T.
5917cd7f-27d1-4fcc-99e4-77d0edf19952
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f
Heller, V.
e0c25be3-5a51-4101-9830-e7e66cd075ba
Farley, F.J.M.
a9ebf235-9575-4d8d-a11f-73ef49383a77
Hearn, G.E.
c1b2912b-fe5c-432c-aaa4-39c5eff75178
Rainey, R.C.T.
5917cd7f-27d1-4fcc-99e4-77d0edf19952

Chaplin, J.R., Heller, V., Farley, F.J.M., Hearn, G.E. and Rainey, R.C.T. (2012) Laboratory testing the Anaconda. Philosophical Transactions of The Royal Society A, 370 (1959), 403-424. (doi:10.1098/rsta.2011.0256).

Record type: Article

Abstract

Laboratory measurements are presented of the performance of the Anaconda, a wave energy converter comprising a submerged water-filled distensible tube aligned with the incident waves. Experiments were carried out at a scale of around 1:25 with a 250mm diameter tube, 7m long, constructed of rubber and fabric, terminating in a linear power take-off of adjustable impedance.

The paper presents some basic theory that leads to predictions of distensibility and bulge wave speed in a pressurised compound rubber and fabric tube, including the effects of inelastic sectors in the circumference, longitudinal tension, and the surrounding fluid. Results are shown to agree closely with measurements in still water.

The theory is developed further to provide a model for the propagation of bulges and power conversion in the Anaconda. In the presence of external water waves the theory identifies three distinct internal wave components and provides theoretical estimates of power capture. For the first time, these and other predictions of the behaviour of the Anaconda, a device unlike almost all other marine systems, are shown to be in remarkably close agreement with measurements.

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More information

Published date: January 2012
Organisations: Energy & Climate Change Group, Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 204133
URI: https://eprints.soton.ac.uk/id/eprint/204133
ISSN: 1364-503X
PURE UUID: d1180866-6f0e-47aa-b7e0-eeb9fed934ff

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Date deposited: 25 Nov 2011 16:36
Last modified: 11 Nov 2019 21:15

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