Wave spectral bandwidth as a measure of available wave power

George H. Smith; Vengatesan Venugopal; Jack Fasham

Wave spectral bandwidth as a measure of available wave power

George H. Smith, Vengatesan Venugopal, Jack Fasham

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A key requirement in the description of the performance of a wave energy converter is how the efficiency of power capture changes with the properties of the sea. This paper examines the effect of two generic power transfer functions (PTF) on power production from six simulated wave spectra. These were chosen to represent a series of wind, wind-swell mixed and swell dominated seas. The spread in energy within the sea state as defined by a variety of bandwidth parameters was examined to determine if there was a correlation between the width of the transfer function and the sea bandwidth. It was found that, for the 'constant' height PTF, the bandwidth parameter B_b (calculated using zeroth, minus-one and minus-two spectral moments) provided the best correlation. Customary bandwidths s and v performed poorly. When the PTF was allowed to vary in height as well as width there was little improvement in correlation from the un-scaled results. Copyright © 2006 by ASME.

Original language	English
Title of host publication	Proceedings of 25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006
Volume	2006
Publication status	Published - 2006
Event	25th International Conference on Offshore Mechanics and Arctic Engineering 2006 - Hamburg, Germany Duration: 4 Jun 2006 → 9 Jun 2006

Conference

Conference	25th International Conference on Offshore Mechanics and Arctic Engineering 2006
Abbreviated title	OMAE 2006
Country	Germany
City	Hamburg
Period	4/06/06 → 9/06/06

Keywords

Spectral bandwidth
Tuning
Wave energy

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title = "Wave spectral bandwidth as a measure of available wave power",

abstract = "A key requirement in the description of the performance of a wave energy converter is how the efficiency of power capture changes with the properties of the sea. This paper examines the effect of two generic power transfer functions (PTF) on power production from six simulated wave spectra. These were chosen to represent a series of wind, wind-swell mixed and swell dominated seas. The spread in energy within the sea state as defined by a variety of bandwidth parameters was examined to determine if there was a correlation between the width of the transfer function and the sea bandwidth. It was found that, for the 'constant' height PTF, the bandwidth parameter Bb (calculated using zeroth, minus-one and minus-two spectral moments) provided the best correlation. Customary bandwidths s and v performed poorly. When the PTF was allowed to vary in height as well as width there was little improvement in correlation from the un-scaled results. Copyright {\textcopyright} 2006 by ASME.",

keywords = "Spectral bandwidth, Tuning, Wave energy",

author = "Smith, {George H.} and Vengatesan Venugopal and Jack Fasham",

year = "2006",

language = "English",

isbn = "0791837777",

volume = "2006",

booktitle = "Proceedings of 25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006",

note = "25th International Conference on Offshore Mechanics and Arctic Engineering 2006, OMAE 2006 ; Conference date: 04-06-2006 Through 09-06-2006",

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TY - GEN

T1 - Wave spectral bandwidth as a measure of available wave power

AU - Smith, George H.

AU - Venugopal, Vengatesan

AU - Fasham, Jack

PY - 2006

Y1 - 2006

N2 - A key requirement in the description of the performance of a wave energy converter is how the efficiency of power capture changes with the properties of the sea. This paper examines the effect of two generic power transfer functions (PTF) on power production from six simulated wave spectra. These were chosen to represent a series of wind, wind-swell mixed and swell dominated seas. The spread in energy within the sea state as defined by a variety of bandwidth parameters was examined to determine if there was a correlation between the width of the transfer function and the sea bandwidth. It was found that, for the 'constant' height PTF, the bandwidth parameter Bb (calculated using zeroth, minus-one and minus-two spectral moments) provided the best correlation. Customary bandwidths s and v performed poorly. When the PTF was allowed to vary in height as well as width there was little improvement in correlation from the un-scaled results. Copyright © 2006 by ASME.

AB - A key requirement in the description of the performance of a wave energy converter is how the efficiency of power capture changes with the properties of the sea. This paper examines the effect of two generic power transfer functions (PTF) on power production from six simulated wave spectra. These were chosen to represent a series of wind, wind-swell mixed and swell dominated seas. The spread in energy within the sea state as defined by a variety of bandwidth parameters was examined to determine if there was a correlation between the width of the transfer function and the sea bandwidth. It was found that, for the 'constant' height PTF, the bandwidth parameter Bb (calculated using zeroth, minus-one and minus-two spectral moments) provided the best correlation. Customary bandwidths s and v performed poorly. When the PTF was allowed to vary in height as well as width there was little improvement in correlation from the un-scaled results. Copyright © 2006 by ASME.

KW - Spectral bandwidth

KW - Tuning

KW - Wave energy

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M3 - Conference contribution

SN - 0791837777

SN - 9780791837771

VL - 2006

BT - Proceedings of 25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006

T2 - 25th International Conference on Offshore Mechanics and Arctic Engineering 2006

Y2 - 4 June 2006 through 9 June 2006

ER -