The effect of directional spreading on interaction of focused wave groups with a cylinder

Eugeny V. Buldakov; Rodney Eatock Taylor; Paul H. Taylor

doi:10.1115/OMAE2004-51422

The effect of directional spreading on interaction of focused wave groups with a cylinder

Eugeny V. Buldakov^*, Rodney Eatock Taylor, Paul H. Taylor

^*Corresponding author for this work

University of Oxford

Research output: Contribution to conference › Conference paper (not formally published) › peer-review

Abstract

The problem of diffraction of a directionally spread focused wave group by a bottom-seated circular cylinder is considered from the view point of second-order perturbation theory. After applying the time Fourier transform and separation of vertical variable the resulting two-dimensional non-homogeneous Helmholtz equations are solved numerically using finite differences. Numerical solutions of the problem are obtained for JONSWAP amplitude spectra for the incoming wave group with various types of directional spreading. The results are compared with the corresponding results for a unidirectional wave group of the same amplitude spectrum. Finally we discuss the applicability of the averaged spreading angle concept for practical applications.

Original language	English
Pages	813-822
Number of pages	10
DOIs	https://doi.org/10.1115/OMAE2004-51422
Publication status	Published - 2004
Externally published	Yes
Event	23rd International Conference on Offshore Mechanics and Arctic Engineering - Vancouver, BC, Canada Duration: 20 Jun 2004 → 25 Jun 2004

Conference

Conference	23rd International Conference on Offshore Mechanics and Arctic Engineering
Country/Territory	Canada
City	Vancouver, BC
Period	20/06/04 → 25/06/04

ASJC Scopus subject areas

Ocean Engineering
Energy Engineering and Power Technology
Mechanical Engineering

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10.1115/OMAE2004-51422

Cite this

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title = "The effect of directional spreading on interaction of focused wave groups with a cylinder",

abstract = "The problem of diffraction of a directionally spread focused wave group by a bottom-seated circular cylinder is considered from the view point of second-order perturbation theory. After applying the time Fourier transform and separation of vertical variable the resulting two-dimensional non-homogeneous Helmholtz equations are solved numerically using finite differences. Numerical solutions of the problem are obtained for JONSWAP amplitude spectra for the incoming wave group with various types of directional spreading. The results are compared with the corresponding results for a unidirectional wave group of the same amplitude spectrum. Finally we discuss the applicability of the averaged spreading angle concept for practical applications.",

author = "Buldakov, {Eugeny V.} and Taylor, {Rodney Eatock} and Taylor, {Paul H.}",

year = "2004",

doi = "10.1115/OMAE2004-51422",

language = "English",

pages = "813--822",

note = "23rd International Conference on Offshore Mechanics and Arctic Engineering ; Conference date: 20-06-2004 Through 25-06-2004",

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The effect of directional spreading on interaction of focused wave groups with a cylinder. / Buldakov, Eugeny V.; Taylor, Rodney Eatock; Taylor, Paul H.
2004. 813-822 Paper presented at 23rd International Conference on Offshore Mechanics and Arctic Engineering, Vancouver, BC, Canada.

Research output: Contribution to conference › Conference paper (not formally published) › peer-review

TY - CONF

T1 - The effect of directional spreading on interaction of focused wave groups with a cylinder

AU - Buldakov, Eugeny V.

AU - Taylor, Rodney Eatock

AU - Taylor, Paul H.

PY - 2004

Y1 - 2004

N2 - The problem of diffraction of a directionally spread focused wave group by a bottom-seated circular cylinder is considered from the view point of second-order perturbation theory. After applying the time Fourier transform and separation of vertical variable the resulting two-dimensional non-homogeneous Helmholtz equations are solved numerically using finite differences. Numerical solutions of the problem are obtained for JONSWAP amplitude spectra for the incoming wave group with various types of directional spreading. The results are compared with the corresponding results for a unidirectional wave group of the same amplitude spectrum. Finally we discuss the applicability of the averaged spreading angle concept for practical applications.

AB - The problem of diffraction of a directionally spread focused wave group by a bottom-seated circular cylinder is considered from the view point of second-order perturbation theory. After applying the time Fourier transform and separation of vertical variable the resulting two-dimensional non-homogeneous Helmholtz equations are solved numerically using finite differences. Numerical solutions of the problem are obtained for JONSWAP amplitude spectra for the incoming wave group with various types of directional spreading. The results are compared with the corresponding results for a unidirectional wave group of the same amplitude spectrum. Finally we discuss the applicability of the averaged spreading angle concept for practical applications.

UR - http://www.scopus.com/inward/record.url?scp=11244349763&partnerID=8YFLogxK

U2 - 10.1115/OMAE2004-51422

DO - 10.1115/OMAE2004-51422

M3 - Conference paper (not formally published)

AN - SCOPUS:11244349763

SP - 813

EP - 822

T2 - 23rd International Conference on Offshore Mechanics and Arctic Engineering

Y2 - 20 June 2004 through 25 June 2004

ER -

The effect of directional spreading on interaction of focused wave groups with a cylinder

Abstract

Conference

ASJC Scopus subject areas

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