TY - JOUR

T1 - How does Oyster work? The simple interpretation of Oyster mathematics

AU - Renzi, E.

AU - Doherty, K.

AU - Henry, A.

AU - Dias, F.

N1 - Funding information: This publication has emanated from research conducted with the financial support of Science Foundation Ireland under Grant Number SFI/10/IN.1/I2996 and SFI/12/RC/2302 .

PY - 2014/4/2

Y1 - 2014/4/2

N2 - Oyster® is a surface-piercing flap-type device designed to harvest wave energy in the nearshore environment. Established mathematical theories of wave energy conversion, such as 3D point-absorber and 2D terminator theory, are inadequate to accurately describe the behaviour of Oyster, historically resulting in distorted conclusions regarding the potential of such a concept to harness the power of ocean waves. Accurately reproducing the dynamics of Oyster requires the introduction of a new reference mathematical model, the "flap-type absorber". A flap-type absorber is a large thin device which extracts energy by pitching about a horizontal axis parallel to the ocean bottom. This paper unravels the mathematics of Oyster as a flap-type absorber. The main goals of this work are to provide a simple-yet accurate-physical interpretation of the laws governing the mechanism of wave power absorption by Oyster and to emphasise why some other, more established, mathematical theories cannot be expected to accurately describe its behaviour.

AB - Oyster® is a surface-piercing flap-type device designed to harvest wave energy in the nearshore environment. Established mathematical theories of wave energy conversion, such as 3D point-absorber and 2D terminator theory, are inadequate to accurately describe the behaviour of Oyster, historically resulting in distorted conclusions regarding the potential of such a concept to harness the power of ocean waves. Accurately reproducing the dynamics of Oyster requires the introduction of a new reference mathematical model, the "flap-type absorber". A flap-type absorber is a large thin device which extracts energy by pitching about a horizontal axis parallel to the ocean bottom. This paper unravels the mathematics of Oyster as a flap-type absorber. The main goals of this work are to provide a simple-yet accurate-physical interpretation of the laws governing the mechanism of wave power absorption by Oyster and to emphasise why some other, more established, mathematical theories cannot be expected to accurately describe its behaviour.

KW - Applied mathematics

KW - Fluid-structure interactions

KW - Oyster

KW - Wave energy

UR - http://www.scopus.com/inward/record.url?scp=84902538066&partnerID=8YFLogxK

U2 - 10.1016/j.euromechflu.2014.03.007

DO - 10.1016/j.euromechflu.2014.03.007

M3 - Article

AN - SCOPUS:84902538066

SN - 0997-7546

VL - 47

SP - 124

EP - 131

JO - European Journal of Mechanics, B/Fluids

JF - European Journal of Mechanics, B/Fluids

ER -