Effects of second-order hydrodynamics on the efficiency of a wave energy array

H. A. Wolgamot; R. Eatock Taylor; P. H. Taylor

doi:10.1016/j.ijome.2016.04.005

Effects of second-order hydrodynamics on the efficiency of a wave energy array

H. A. Wolgamot^*, R. Eatock Taylor, P. H. Taylor

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

This paper considers power absorption by a square array of four heaving truncated cylinders subject to monochromatic incident waves, where the hydrodynamic calculations are correct to second-order. This idealised wave energy converter (WEC) array is of particular interest as it supports a near-trapped mode which offers the opportunity for strong hydrodynamic interactions between WECs. However, for typical WEC geometries this mode can only be excited at second-order. The approach taken is to seek to maximise the significance of the second-order effects, though even in a rather extreme case (a near-trapped mode in shallow water) the maximum additional power is approximately 30% of the linear power, while in all other cases the additional power is much smaller.

Original language	English
Pages (from-to)	85-99
Number of pages	15
Journal	International Journal of Marine Energy
Volume	15
DOIs	https://doi.org/10.1016/j.ijome.2016.04.005
Publication status	Published - 1 Sept 2016
Externally published	Yes

ASJC Scopus subject areas

Environmental Engineering
Environmental Science (miscellaneous)
Water Science and Technology
Ocean Engineering
Mechanical Engineering

Keywords

Array
Near-trapping
Nonlinearity
Second-order
Wave energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijome.2016.04.005

Cite this

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title = "Effects of second-order hydrodynamics on the efficiency of a wave energy array",

abstract = "This paper considers power absorption by a square array of four heaving truncated cylinders subject to monochromatic incident waves, where the hydrodynamic calculations are correct to second-order. This idealised wave energy converter (WEC) array is of particular interest as it supports a near-trapped mode which offers the opportunity for strong hydrodynamic interactions between WECs. However, for typical WEC geometries this mode can only be excited at second-order. The approach taken is to seek to maximise the significance of the second-order effects, though even in a rather extreme case (a near-trapped mode in shallow water) the maximum additional power is approximately 30% of the linear power, while in all other cases the additional power is much smaller.",

keywords = "Array, Near-trapping, Nonlinearity, Second-order, Wave energy",

author = "Wolgamot, {H. A.} and {Eatock Taylor}, R. and Taylor, {P. H.}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

year = "2016",

month = sep,

day = "1",

doi = "10.1016/j.ijome.2016.04.005",

language = "English",

volume = "15",

pages = "85--99",

journal = "International Journal of Marine Energy",

issn = "2214-1669",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Effects of second-order hydrodynamics on the efficiency of a wave energy array

AU - Wolgamot, H. A.

AU - Eatock Taylor, R.

AU - Taylor, P. H.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - This paper considers power absorption by a square array of four heaving truncated cylinders subject to monochromatic incident waves, where the hydrodynamic calculations are correct to second-order. This idealised wave energy converter (WEC) array is of particular interest as it supports a near-trapped mode which offers the opportunity for strong hydrodynamic interactions between WECs. However, for typical WEC geometries this mode can only be excited at second-order. The approach taken is to seek to maximise the significance of the second-order effects, though even in a rather extreme case (a near-trapped mode in shallow water) the maximum additional power is approximately 30% of the linear power, while in all other cases the additional power is much smaller.

AB - This paper considers power absorption by a square array of four heaving truncated cylinders subject to monochromatic incident waves, where the hydrodynamic calculations are correct to second-order. This idealised wave energy converter (WEC) array is of particular interest as it supports a near-trapped mode which offers the opportunity for strong hydrodynamic interactions between WECs. However, for typical WEC geometries this mode can only be excited at second-order. The approach taken is to seek to maximise the significance of the second-order effects, though even in a rather extreme case (a near-trapped mode in shallow water) the maximum additional power is approximately 30% of the linear power, while in all other cases the additional power is much smaller.

KW - Array

KW - Near-trapping

KW - Nonlinearity

KW - Second-order

KW - Wave energy

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U2 - 10.1016/j.ijome.2016.04.005

DO - 10.1016/j.ijome.2016.04.005

M3 - Article

AN - SCOPUS:84973651862

SN - 2214-1669

VL - 15

SP - 85

EP - 99

JO - International Journal of Marine Energy

JF - International Journal of Marine Energy

ER -

Effects of second-order hydrodynamics on the efficiency of a wave energy array

Abstract

ASJC Scopus subject areas

Keywords

UN SDGs

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