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Computational Fluid Dynamics Analysis of Surfboard Hydrodynamics With and Without Fins.

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Title: Computational Fluid Dynamics Analysis of Surfboard Hydrodynamics With and Without Fins.
Authors: Bhandari, Binayak1 (AUTHOR) binayak.bhandari@unsw.edu.au, Richard, Sebastien2 (AUTHOR), Chen, Da2 (AUTHOR), Ponsa, Federico3 (AUTHOR), Pearce, Garth4 (AUTHOR), Panhuis, Marc In Het5 (AUTHOR), Doolan, Matthew6 (AUTHOR), Prusty, Gangadhara Bellasanty1 (AUTHOR)
Source: International Journal of Computational Fluid Dynamics. Sep2025, Vol. 39 Issue 8, p473-488. 16p.
Subjects: Computational fluid dynamics, Hydrodynamics, Rotational motion, Computer simulation, Fluid dynamics, Drag (Hydrodynamics)
Abstract: This comprehensive study presents a computational fluid dynamics analysis to evaluate the performance of high-performance shortboard surfboards with and without fins under various operating conditions subjected to rotational motion about their centre of gravity simulating realistic interaction with the flow. Computational simulations were conducted across angles of attack ranging from 0 to 15°, the resulting lift, drag, and lift-to-drag ratios were compared. Performance evaluation of the different scenarios indicates that the presence of fins consistently enhances lift generation and slightly increases drag, with an overall improvement in hydrodynamic efficiency up to a critical angle. The lift-to-drag ratio peaked between 7° and 9°, suggesting an optimal range for manoeuvrability and performance. This study provides a reproducible CFD methodology and offers new insights into the role of fins in surfboard dynamics. The study is performed on a full-scale surfboard, showing close agreement with the scaled model and prior studies, confirming the accuracy of the numerical analysis. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Computational Fluid Dynamics 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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Header DbId: egs
DbLabel: Engineering Source
An: 195217654
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Computational Fluid Dynamics Analysis of Surfboard Hydrodynamics With and Without Fins.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Bhandari%2C+Binayak%22">Bhandari, Binayak</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> binayak.bhandari@unsw.edu.au</i><br /><searchLink fieldCode="AR" term="%22Richard%2C+Sebastien%22">Richard, Sebastien</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Da%22">Chen, Da</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ponsa%2C+Federico%22">Ponsa, Federico</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pearce%2C+Garth%22">Pearce, Garth</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Panhuis%2C+Marc+In+Het%22">Panhuis, Marc In Het</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Doolan%2C+Matthew%22">Doolan, Matthew</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Prusty%2C+Gangadhara+Bellasanty%22">Prusty, Gangadhara Bellasanty</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Computational+Fluid+Dynamics%22">International Journal of Computational Fluid Dynamics</searchLink>. Sep2025, Vol. 39 Issue 8, p473-488. 16p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics%22">Hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Rotational+motion%22">Rotational motion</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Drag+%28Hydrodynamics%29%22">Drag (Hydrodynamics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This comprehensive study presents a computational fluid dynamics analysis to evaluate the performance of high-performance shortboard surfboards with and without fins under various operating conditions subjected to rotational motion about their centre of gravity simulating realistic interaction with the flow. Computational simulations were conducted across angles of attack ranging from 0 to 15°, the resulting lift, drag, and lift-to-drag ratios were compared. Performance evaluation of the different scenarios indicates that the presence of fins consistently enhances lift generation and slightly increases drag, with an overall improvement in hydrodynamic efficiency up to a critical angle. The lift-to-drag ratio peaked between 7° and 9°, suggesting an optimal range for manoeuvrability and performance. This study provides a reproducible CFD methodology and offers new insights into the role of fins in surfboard dynamics. The study is performed on a full-scale surfboard, showing close agreement with the scaled model and prior studies, confirming the accuracy of the numerical analysis. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Computational Fluid Dynamics 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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        Value: 10.1080/10618562.2026.2668432
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 473
    Subjects:
      – SubjectFull: Computational fluid dynamics
        Type: general
      – SubjectFull: Hydrodynamics
        Type: general
      – SubjectFull: Rotational motion
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Fluid dynamics
        Type: general
      – SubjectFull: Drag (Hydrodynamics)
        Type: general
    Titles:
      – TitleFull: Computational Fluid Dynamics Analysis of Surfboard Hydrodynamics With and Without Fins.
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            NameFull: Bhandari, Binayak
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            NameFull: Richard, Sebastien
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            NameFull: Chen, Da
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            NameFull: Ponsa, Federico
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            NameFull: Panhuis, Marc In Het
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            – D: 01
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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              Value: 39
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              Value: 8
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            – TitleFull: International Journal of Computational Fluid Dynamics
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