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A numerical framework for turbulent tidal energy extraction over corrugated wavy surfaces.

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Title: A numerical framework for turbulent tidal energy extraction over corrugated wavy surfaces.
Authors: Duwairi, Hamzeh1 (AUTHOR), Alhyari, Ali M.1 (AUTHOR), Mustafa, Mohamad Y.2 (AUTHOR) mohamad.y.mustafa@uit.no, Alrbai, Mohammad1 (AUTHOR)
Source: Advances in Mechanical Engineering (Sage Publications Inc.). Mar2026, Vol. 18 Issue 3, p1-15. 15p.
Subjects: Tidal power, Turbulent flow, Hydrodynamics, Wave-current interaction, Computer simulation, Turbine efficiency, Renewable energy sources
Abstract: Tidal energy is a promising renewable resource capable of supporting global strategies to reduce carbon emissions. This study develops a numerical framework to predict tidal turbine performance under corrugated wavy surface hydrodynamics, capturing the combined influence of turbulent flow and wave–structure interaction. The model integrates the conservation of momentum and continuity equations with a corrugated wavy surface function to represent near-surface velocity fluctuations. The coupled equations were solved in MATLAB® to evaluate the effects of turbine radius, hub depth, wave amplitude, and wavelength under unsteady and incompressible turbulent flow conditions. The results show that increasing the turbine radius from 2 to 4 m raises the power ratio from approximately 0.46 to 0.97 due to the larger swept area. Increasing the hub depth from 5 to 8 m decreases the power ratio from 0.81 to 0.68 because of reduced near-bed velocities. Shorter wavelengths (λ = 0.55 m) and higher wave amplitudes (a = 0.65 m) significantly enhance power output, while longer wavelengths (λ = 0.65 m) produce negligible power (<0.1). The findings indicate that optimal performance occurs with maximum wave amplitude and minimal wavelength and hub depth. The developed model offers a practical theoretical tool for designing and optimizing tidal turbines under realistic marine wave conditions. [ABSTRACT FROM AUTHOR]
Copyright of Advances in Mechanical Engineering (Sage Publications Inc.) is the property of Sage Publications Inc. 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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Header DbId: egs
DbLabel: Engineering Source
An: 192655887
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: A numerical framework for turbulent tidal energy extraction over corrugated wavy surfaces.
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  Label: Abstract
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  Data: Tidal energy is a promising renewable resource capable of supporting global strategies to reduce carbon emissions. This study develops a numerical framework to predict tidal turbine performance under corrugated wavy surface hydrodynamics, capturing the combined influence of turbulent flow and wave–structure interaction. The model integrates the conservation of momentum and continuity equations with a corrugated wavy surface function to represent near-surface velocity fluctuations. The coupled equations were solved in MATLAB&#174; to evaluate the effects of turbine radius, hub depth, wave amplitude, and wavelength under unsteady and incompressible turbulent flow conditions. The results show that increasing the turbine radius from 2 to 4 m raises the power ratio from approximately 0.46 to 0.97 due to the larger swept area. Increasing the hub depth from 5 to 8 m decreases the power ratio from 0.81 to 0.68 because of reduced near-bed velocities. Shorter wavelengths (λ = 0.55 m) and higher wave amplitudes (a = 0.65 m) significantly enhance power output, while longer wavelengths (λ = 0.65 m) produce negligible power (&lt;0.1). The findings indicate that optimal performance occurs with maximum wave amplitude and minimal wavelength and hub depth. The developed model offers a practical theoretical tool for designing and optimizing tidal turbines under realistic marine wave conditions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: &lt;i&gt;Copyright of Advances in Mechanical Engineering (Sage Publications Inc.) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder&#39;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.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1177/16878132261416646
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Tidal power
        Type: general
      – SubjectFull: Turbulent flow
        Type: general
      – SubjectFull: Hydrodynamics
        Type: general
      – SubjectFull: Wave-current interaction
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Turbine efficiency
        Type: general
      – SubjectFull: Renewable energy sources
        Type: general
    Titles:
      – TitleFull: A numerical framework for turbulent tidal energy extraction over corrugated wavy surfaces.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Duwairi, Hamzeh
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            NameFull: Alhyari, Ali M.
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            NameFull: Mustafa, Mohamad Y.
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            NameFull: Alrbai, Mohammad
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            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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              Value: 18
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              Value: 3
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            – TitleFull: Advances in Mechanical Engineering (Sage Publications Inc.)
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