A surface-piercing truncated cylindrical meta-structure operating as a wave energy converter

Jin Huang; Richard Porter; Siming Zheng

doi:10.1063/5.0165068

A surface-piercing truncated cylindrical meta-structure operating as a wave energy converter

Jin Huang^*
, Richard Porter
, Siming Zheng

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

7 Citations (Scopus)

Abstract

In this paper we study the interaction of water waves with a surface-piercing truncated cylindrical meta-structure consisting of two overlapping arrays of closely-spaced vertical thin plates. The fluid resonance promoted in the narrow vertical channels formed by the cylindrical meta-structure is exploited by a novel design concept of the wave power converter by covering the surface of the cylinder with an array of small cuboid buoys which float in the gaps between the intersecting plate arrays. Each buoy is attached to its own spring and power take-off damping mechanism and the vertical displacement of individual buoys is replaced by a continuous two-dimensional function of position which follows from homogenisation of the plate/fluid structure of the cylinder. Effective medium equations and boundary conditions are derived under both full depth-dependent theory and shallow-water theory, allowing semi-analytical methods to be developed to investigate the wave scattering and wave energy absorption properties of this cylindrical meta-structure. Results illustrate that the internal resonance of the cylindrical meta-structure can lead to significant wave power capture across a broad range of frequencies.

Original language	English
Article number	097116
Number of pages	19
Journal	Physics of Fluids
Volume	35
Issue number	9
DOIs	https://doi.org/10.1063/5.0165068
Publication status	Published - 12 Sept 2023

Bibliographical note

Funding Information:
J.H. and R.P. gratefully acknowledge the EPSRC for supporting this work through Grant No. EP/V04740X/1. S.Z. gratefully acknowledges the State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University for supporting part of this work through the Open Research Fund Program (Grant No. HESS-1902).

Publisher Copyright:
© 2023 Author(s).

Access to Document

10.1063/5.0165068Licence: CC BY

Handle.net

Persistent link

Cite this

@article{55beef3514034dff95c550d82dd5753b,

title = "A surface-piercing truncated cylindrical meta-structure operating as a wave energy converter",

abstract = "In this paper we study the interaction of water waves with a surface-piercing truncated cylindrical meta-structure consisting of two overlapping arrays of closely-spaced vertical thin plates. The fluid resonance promoted in the narrow vertical channels formed by the cylindrical meta-structure is exploited by a novel design concept of the wave power converter by covering the surface of the cylinder with an array of small cuboid buoys which float in the gaps between the intersecting plate arrays. Each buoy is attached to its own spring and power take-off damping mechanism and the vertical displacement of individual buoys is replaced by a continuous two-dimensional function of position which follows from homogenisation of the plate/fluid structure of the cylinder. Effective medium equations and boundary conditions are derived under both full depth-dependent theory and shallow-water theory, allowing semi-analytical methods to be developed to investigate the wave scattering and wave energy absorption properties of this cylindrical meta-structure. Results illustrate that the internal resonance of the cylindrical meta-structure can lead to significant wave power capture across a broad range of frequencies.",

author = "Jin Huang and Richard Porter and Siming Zheng",

note = "Funding Information: J.H. and R.P. gratefully acknowledge the EPSRC for supporting this work through Grant No. EP/V04740X/1. S.Z. gratefully acknowledges the State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University for supporting part of this work through the Open Research Fund Program (Grant No. HESS-1902). Publisher Copyright: {\textcopyright} 2023 Author(s).",

year = "2023",

month = sep,

day = "12",

doi = "10.1063/5.0165068",

language = "English",

volume = "35",

journal = "Physics of Fluids",

issn = "1070-6631",

publisher = "American Institute of Physics (AIP)",

number = "9",

}

TY - JOUR

T1 - A surface-piercing truncated cylindrical meta-structure operating as a wave energy converter

AU - Huang, Jin

AU - Porter, Richard

AU - Zheng, Siming

N1 - Funding Information: J.H. and R.P. gratefully acknowledge the EPSRC for supporting this work through Grant No. EP/V04740X/1. S.Z. gratefully acknowledges the State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University for supporting part of this work through the Open Research Fund Program (Grant No. HESS-1902). Publisher Copyright: © 2023 Author(s).

PY - 2023/9/12

Y1 - 2023/9/12

N2 - In this paper we study the interaction of water waves with a surface-piercing truncated cylindrical meta-structure consisting of two overlapping arrays of closely-spaced vertical thin plates. The fluid resonance promoted in the narrow vertical channels formed by the cylindrical meta-structure is exploited by a novel design concept of the wave power converter by covering the surface of the cylinder with an array of small cuboid buoys which float in the gaps between the intersecting plate arrays. Each buoy is attached to its own spring and power take-off damping mechanism and the vertical displacement of individual buoys is replaced by a continuous two-dimensional function of position which follows from homogenisation of the plate/fluid structure of the cylinder. Effective medium equations and boundary conditions are derived under both full depth-dependent theory and shallow-water theory, allowing semi-analytical methods to be developed to investigate the wave scattering and wave energy absorption properties of this cylindrical meta-structure. Results illustrate that the internal resonance of the cylindrical meta-structure can lead to significant wave power capture across a broad range of frequencies.

AB - In this paper we study the interaction of water waves with a surface-piercing truncated cylindrical meta-structure consisting of two overlapping arrays of closely-spaced vertical thin plates. The fluid resonance promoted in the narrow vertical channels formed by the cylindrical meta-structure is exploited by a novel design concept of the wave power converter by covering the surface of the cylinder with an array of small cuboid buoys which float in the gaps between the intersecting plate arrays. Each buoy is attached to its own spring and power take-off damping mechanism and the vertical displacement of individual buoys is replaced by a continuous two-dimensional function of position which follows from homogenisation of the plate/fluid structure of the cylinder. Effective medium equations and boundary conditions are derived under both full depth-dependent theory and shallow-water theory, allowing semi-analytical methods to be developed to investigate the wave scattering and wave energy absorption properties of this cylindrical meta-structure. Results illustrate that the internal resonance of the cylindrical meta-structure can lead to significant wave power capture across a broad range of frequencies.

U2 - 10.1063/5.0165068

DO - 10.1063/5.0165068

M3 - Article (Academic Journal)

SN - 1070-6631

VL - 35

JO - Physics of Fluids

JF - Physics of Fluids

IS - 9

M1 - 097116

ER -

A surface-piercing truncated cylindrical meta-structure operating as a wave energy converter

Abstract

Bibliographical note

Access to Document

Handle.net

Fingerprint

Cite this