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Wave overtopping analysis by an enhanced SPH method considering the porosity structure of wave-dissipating blocks.

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Title: Wave overtopping analysis by an enhanced SPH method considering the porosity structure of wave-dissipating blocks.
Authors: Gotoh, Takafumi1 (AUTHOR) taka.gotoh@ku.pmres.jp, Tsuruta, Naoki2 (AUTHOR), Yamanaka, Shun3 (AUTHOR), Khayyer, Abbas3 (AUTHOR), Gotoh, Hitoshi3 (AUTHOR)
Source: Coastal Engineering Journal. Dec2025, Vol. 67 Issue 4, p609-624. 16p.
Subjects: Particle methods (Numerical analysis), Hydraulic structures, Computer simulation, Flow velocity, Computational fluid dynamics, Hydraulic models, Water waves, Coastal engineering
Abstract: In the modeling of wave-dissipating blocks for wave overtopping simulations over wave-dissipating block seawall, the so-called porous models have been widely used. In conventional porous models, resistance for fluid is evaluated by applying semi-empirical experimental constants to the target permeable area, neglecting local flow velocities through the gaps between the blocks. This results in poor reproducibility, especially under wave-breaking conditions where complex flow through the gaps between the block becomes prominent. To address this issue and to reproduce the complex local flow field within the wave-dissipating blocks area, this study proposes a novel permeable boundary model that explicitly represents the shielding regions and flow channels by a group of blocks and thereby aims to achieve an enhanced wave overtopping simulation targeting a seawall with wave-dissipating blocks with a practical computational load. In the proposed model, the 3-D arrangement characteristics of individual wave-dissipating blocks are projected onto a 2-D cross-section, and the boundaries of the flow paths between the blocks are given by fixed particles. The proposed model is implemented into a particle method, and simulations of wave overtopping over wave-dissipating block seawalls are conducted to verify the reproducibility of overtopping flow rates and an observed process of wave overtopping. [ABSTRACT FROM AUTHOR]
Copyright of Coastal Engineering Journal is the property of Taylor & Francis Ltd 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: 189570758
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Wave overtopping analysis by an enhanced SPH method considering the porosity structure of wave-dissipating blocks.
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  Data: In the modeling of wave-dissipating blocks for wave overtopping simulations over wave-dissipating block seawall, the so-called porous models have been widely used. In conventional porous models, resistance for fluid is evaluated by applying semi-empirical experimental constants to the target permeable area, neglecting local flow velocities through the gaps between the blocks. This results in poor reproducibility, especially under wave-breaking conditions where complex flow through the gaps between the block becomes prominent. To address this issue and to reproduce the complex local flow field within the wave-dissipating blocks area, this study proposes a novel permeable boundary model that explicitly represents the shielding regions and flow channels by a group of blocks and thereby aims to achieve an enhanced wave overtopping simulation targeting a seawall with wave-dissipating blocks with a practical computational load. In the proposed model, the 3-D arrangement characteristics of individual wave-dissipating blocks are projected onto a 2-D cross-section, and the boundaries of the flow paths between the blocks are given by fixed particles. The proposed model is implemented into a particle method, and simulations of wave overtopping over wave-dissipating block seawalls are conducted to verify the reproducibility of overtopping flow rates and an observed process of wave overtopping. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Coastal Engineering Journal is the property of Taylor & Francis Ltd 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:
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      – Type: doi
        Value: 10.1080/21664250.2025.2531704
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 16
        StartPage: 609
    Subjects:
      – SubjectFull: Particle methods (Numerical analysis)
        Type: general
      – SubjectFull: Hydraulic structures
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Flow velocity
        Type: general
      – SubjectFull: Computational fluid dynamics
        Type: general
      – SubjectFull: Hydraulic models
        Type: general
      – SubjectFull: Water waves
        Type: general
      – SubjectFull: Coastal engineering
        Type: general
    Titles:
      – TitleFull: Wave overtopping analysis by an enhanced SPH method considering the porosity structure of wave-dissipating blocks.
        Type: main
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            NameFull: Gotoh, Takafumi
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            NameFull: Tsuruta, Naoki
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            NameFull: Yamanaka, Shun
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            NameFull: Khayyer, Abbas
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            – D: 01
              M: 12
              Text: Dec2025
              Type: published
              Y: 2025
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              Value: 67
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            – TitleFull: Coastal Engineering Journal
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