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Diffraction of waves by multi-pontoon rectangular floating breakwaters.

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Title: Diffraction of waves by multi-pontoon rectangular floating breakwaters.
Authors: Masoudi, Esmaeel1,2 (AUTHOR) e.masoudi@bristol.ac.uk, Marshall, Adam2 (AUTHOR)
Source: Ocean Engineering. Oct2024:Part 2, Vol. 310, pN.PAG-N.PAG. 1p.
Subjects: Wave diffraction, Reflectance, Ocean conditions (Weather), Exponential functions, Pontoons
Abstract: This paper explores the hydrodynamic characteristics of multi-pontoon rectangular floating breakwaters (FBs) in finite-depth water with an infinite domain, subjected to sinusoidal waves. Employing a numerical panel method, a comprehensive parametric analysis is conducted to evaluate the impact of pontoon number (N), pontoon spacing, and chamber height, specifically on transmission and reflection coefficients. The results indicate that multi-pontoon FBs outperform regular rectangular FBs and the two-legged FBs described in Masoudi and Gan (2021), making them a preferable choice in rough sea conditions or where wave attenuation is critical. Interestingly, increasing the pontoon number does not necessarily elevate the maximum diffraction wave amplitude; instead, it alters the diffraction wave frequency, resulting in lower transmission coefficients. Maximum diffraction wave amplitudes exhibit a linear function concerning the reflection coefficient for N = 1 and a weak exponential function for N > 1. • Hydrodynamic analysis is carried out for rectangular multi-pontoon FBs. • A numerical panel method is used. • Transmission and reflection coefficients are derived in different pontoon numbers. • Diffraction wave formation induces a jump in exciting forces. [ABSTRACT FROM AUTHOR]
Copyright of Ocean Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 179323582
AccessLevel: 6
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  Label: Title
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  Data: Diffraction of waves by multi-pontoon rectangular floating breakwaters.
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  Data: <searchLink fieldCode="AR" term="%22Masoudi%2C+Esmaeel%22">Masoudi, Esmaeel</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> e.masoudi@bristol.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Marshall%2C+Adam%22">Marshall, Adam</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Ocean+Engineering%22">Ocean Engineering</searchLink>. Oct2024:Part 2, Vol. 310, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Wave+diffraction%22">Wave diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Reflectance%22">Reflectance</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean+conditions+%28Weather%29%22">Ocean conditions (Weather)</searchLink><br /><searchLink fieldCode="DE" term="%22Exponential+functions%22">Exponential functions</searchLink><br /><searchLink fieldCode="DE" term="%22Pontoons%22">Pontoons</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This paper explores the hydrodynamic characteristics of multi-pontoon rectangular floating breakwaters (FBs) in finite-depth water with an infinite domain, subjected to sinusoidal waves. Employing a numerical panel method, a comprehensive parametric analysis is conducted to evaluate the impact of pontoon number (N), pontoon spacing, and chamber height, specifically on transmission and reflection coefficients. The results indicate that multi-pontoon FBs outperform regular rectangular FBs and the two-legged FBs described in Masoudi and Gan (2021), making them a preferable choice in rough sea conditions or where wave attenuation is critical. Interestingly, increasing the pontoon number does not necessarily elevate the maximum diffraction wave amplitude; instead, it alters the diffraction wave frequency, resulting in lower transmission coefficients. Maximum diffraction wave amplitudes exhibit a linear function concerning the reflection coefficient for N = 1 and a weak exponential function for N > 1. • Hydrodynamic analysis is carried out for rectangular multi-pontoon FBs. • A numerical panel method is used. • Transmission and reflection coefficients are derived in different pontoon numbers. • Diffraction wave formation induces a jump in exciting forces. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ocean Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.oceaneng.2024.118789
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Wave diffraction
        Type: general
      – SubjectFull: Reflectance
        Type: general
      – SubjectFull: Ocean conditions (Weather)
        Type: general
      – SubjectFull: Exponential functions
        Type: general
      – SubjectFull: Pontoons
        Type: general
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      – TitleFull: Diffraction of waves by multi-pontoon rectangular floating breakwaters.
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            NameFull: Marshall, Adam
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              M: 10
              Text: Oct2024:Part 2
              Type: published
              Y: 2024
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              Value: 310
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