Near-trapping effects for multi-column structures in deterministic and random waves

J. R. Gricen; P. H. Taylor; R. Eatock Taylor

doi:10.1016/j.oceaneng.2012.09.021

Near-trapping effects for multi-column structures in deterministic and random waves

J. R. Gricen^*, P. H. Taylor, R. Eatock Taylor

^*Corresponding author for this work

University of Oxford

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

Abstract

Linear theory has been applied to the diffraction of regular waves by square arrays of columns. Free surface amplification has been calculated using the linear module of the computer program DIFFRACT and compared between solitary columns and arrays of two and four columns. Implications of the near-trapping phenomenon for the occurrence of violent responses have been looked at. The effect on free surface amplification of changing column shape and breaking up array symmetry has been studied. The diffraction of NewWave wavegroups by square arrays of circular columns and statistics of extreme events in random sea-states are used to produce a net amplification factor for highlighting probable locations of violent response when designing new structures.

Original language	English
Pages (from-to)	60-77
Number of pages	18
Journal	Ocean Engineering
Volume	58
DOIs	https://doi.org/10.1016/j.oceaneng.2012.09.021
Publication status	Published - 2013
Externally published	Yes

ASJC Scopus subject areas

Environmental Engineering
Ocean Engineering

Keywords

Diffraction
Focussed wave group
Mode shape
Near-trapping
NewWave

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10.1016/j.oceaneng.2012.09.021

Cite this

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title = "Near-trapping effects for multi-column structures in deterministic and random waves",

abstract = "Linear theory has been applied to the diffraction of regular waves by square arrays of columns. Free surface amplification has been calculated using the linear module of the computer program DIFFRACT and compared between solitary columns and arrays of two and four columns. Implications of the near-trapping phenomenon for the occurrence of violent responses have been looked at. The effect on free surface amplification of changing column shape and breaking up array symmetry has been studied. The diffraction of NewWave wavegroups by square arrays of circular columns and statistics of extreme events in random sea-states are used to produce a net amplification factor for highlighting probable locations of violent response when designing new structures.",

keywords = "Diffraction, Focussed wave group, Mode shape, Near-trapping, NewWave",

author = "Gricen, {J. R.} and Taylor, {P. H.} and Taylor, {R. Eatock}",

year = "2013",

doi = "10.1016/j.oceaneng.2012.09.021",

language = "English",

volume = "58",

pages = "60--77",

journal = "Ocean Engineering",

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T1 - Near-trapping effects for multi-column structures in deterministic and random waves

AU - Gricen, J. R.

AU - Taylor, P. H.

AU - Taylor, R. Eatock

PY - 2013

Y1 - 2013

N2 - Linear theory has been applied to the diffraction of regular waves by square arrays of columns. Free surface amplification has been calculated using the linear module of the computer program DIFFRACT and compared between solitary columns and arrays of two and four columns. Implications of the near-trapping phenomenon for the occurrence of violent responses have been looked at. The effect on free surface amplification of changing column shape and breaking up array symmetry has been studied. The diffraction of NewWave wavegroups by square arrays of circular columns and statistics of extreme events in random sea-states are used to produce a net amplification factor for highlighting probable locations of violent response when designing new structures.

AB - Linear theory has been applied to the diffraction of regular waves by square arrays of columns. Free surface amplification has been calculated using the linear module of the computer program DIFFRACT and compared between solitary columns and arrays of two and four columns. Implications of the near-trapping phenomenon for the occurrence of violent responses have been looked at. The effect on free surface amplification of changing column shape and breaking up array symmetry has been studied. The diffraction of NewWave wavegroups by square arrays of circular columns and statistics of extreme events in random sea-states are used to produce a net amplification factor for highlighting probable locations of violent response when designing new structures.

KW - Diffraction

KW - Focussed wave group

KW - Mode shape

KW - Near-trapping

KW - NewWave

UR - http://www.scopus.com/inward/record.url?scp=84868679862&partnerID=8YFLogxK

U2 - 10.1016/j.oceaneng.2012.09.021

DO - 10.1016/j.oceaneng.2012.09.021

M3 - Article

AN - SCOPUS:84868679862

SN - 0029-8018

VL - 58

SP - 60

EP - 77

JO - Ocean Engineering

JF - Ocean Engineering

ER -

Near-trapping effects for multi-column structures in deterministic and random waves

Abstract

ASJC Scopus subject areas

Keywords

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