ORIGINAL RESEARCH article
Front. Mar. Sci.
Sec. Ocean Solutions
Volume 12 - 2025 | doi: 10.3389/fmars.2025.1651862
This article is part of the Research TopicTowards the Future: Sustainable Development in Marine Renewable EnergyView all articles
Hydrodynamic and energy extraction properties of oscillating hydrofoil with double Fowler flaps
Provisionally accepted
- Shandong Jiaotong University, Jinan, China
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In order to improve the energy extraction capability of oscillating hydrofoils, a dual Fowler flap structure is adopted as a device to increase lift. According to the motion of the oscillating hydrofoil, the double Fowler flaps retract and swing to increase the chord length and curvature of the entire hydrofoil. We proposed and established the structure and motion equation of Fowler flaps, and studied the influence of Fowler flaps on the overall performance of hydrofoils under fixed Reynolds number conditions. The numerical results indicate that compared to the NACA0018 hydrofoil without flaps, the application of Fowler flaps increase overall wing camber. By influencing the flow structure and pressure distribution around the trailing edge of the hydrofoil, Fowler flaps help generate lift, resulting in higher power coefficient and energy capture efficiency. The structure of the Fowler flaps keeps the entire hydrofoil in the streamlined state of traditional hydrofoils, with a smaller range of fluctuations in lift and drag.
Keywords: tidal energy, Oscillating hydrofoil, Fowler flap, Energy Harvesting, Hydrodynamic
Received: 22 Jun 2025; Accepted: 23 Jul 2025.
Copyright: © 2025 Sun, Zhang, Sun, Chi and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Guang Sun, Shandong Jiaotong University, Jinan, China
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