Numerical investigation of the hydrodynamics of changing fin positions within a 4-fin surfboard configuration
Falk S, Kniesburges S, Janka RM, O'Keefe T, Grosso R, Döllinger M (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 10
Article Number: 816
Journal Issue: 3
DOI: 10.3390/app10030816
Abstract
Most sports like surfing are highly developed. It is necessary to tease the last percentages out of the competitors and equipment-in the case of surfing the surfboard-fin-system-to win competitions or championships. In this computational investigation, a parameter study of the positioning of the two rear fins within a 4-fin configuration with fixed front fins on a surfboard is executed to find appropriate fin positions for specific surf situations. Four different inflow velocities are investigated. The RANS and URANS models combined with the SST k-ω turbulence model, which is available within the computational fluid dynamics (CFD) package STAR-CCM+, are used to simulate the flow field around the fins for angles of attack (AoA) between 0° and 45°. The simulation results show that shifting the rear fins toward the longitudinal axis of the surfboard lowers the maximum lift. Surfboards with 4-fin configurations are slower in nearly the whole range of AoA due to a higher drag force but produce a higher lift force compared to the 3-fin configuration. The lift and drag forces increase significantly with increasing inflow velocity. This study shows a significant influence of the rear fin positioning and the inflow velocity on lift and drag performance characteristics.
Authors with CRIS profile
Sebastian Falk
Stefan Kniesburges
Rolf Matthias Janka Institute of Radiology Roberto Grosso Chair of Visual Computing Michael Döllinger Professur für Computational Medicine (DFG-Forschungsprofessur)
Stefan Kniesburges
Rolf Matthias Janka Institute of Radiology Roberto Grosso Chair of Visual Computing Michael Döllinger Professur für Computational Medicine (DFG-Forschungsprofessur)
Involved external institutions
United States (USA) (US)How to cite
APA:
Falk, S., Kniesburges, S., Janka, R.M., O'Keefe, T., Grosso, R., & Döllinger, M. (2020). Numerical investigation of the hydrodynamics of changing fin positions within a 4-fin surfboard configuration. Applied Sciences, 10(3). https://doi.org/10.3390/app10030816
MLA:
Falk, Sebastian, et al. "Numerical investigation of the hydrodynamics of changing fin positions within a 4-fin surfboard configuration." Applied Sciences 10.3 (2020).
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