Results 11 to 20 of about 343 (174)

Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method [PDF]

Applied Bionics and Biomechanics, 2016
The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations ...
Gang Xue, Yanjun Liu, Muqun Zhang, Hongpeng Ding   +3 more
doaj   +5 more sources

Numerical Analysis of Leading-Edge Vortex Effect on Tidal Current Energy Extraction Performance for Chord-Wise Deformable Oscillating Hydrofoil

Journal of Marine Science and Engineering, 2019
To improve the energy extraction performance of the oscillating hydrofoil, the lift force that acts on the oscillating hydrofoil is analyzed. The pressure difference between the oscillating hydrofoil‘s opposing surfaces is dominant to generate the ...
Xu Jianan, Zhan Yong, Jianan Xu
exaly   +4 more sources

Hydrodynamic Efficiency Analysis of a Flexible Hydrofoil Oscillating in a Moderate Reynolds Number Fluid Flow

Energies, 2021
The paper focuses on the study of a semi-activated system, based on a combination of two movements of forced pitching and free-heaving motion. Therefore, quantifying with accuracy the hydrodynamic forces applied on the hydrofoil seems to be crucial. This
Paul Brousseau, Mustapha Benaouicha, Sylvain Guillou   +2 more
exaly   +4 more sources

Effects of non-sinusoidal pitching motion on the propulsion performance of an oscillating foil. [PDF]

PLoS ONE, 2019
Numerical simulations have been used in this paper to study the propulsion device of a wave glider based on an oscillating hydrofoil, in which the profile of the pitching and heaving motion have been prescribed for the sake of simplicity.
Zhanfeng Qi, Jingsheng Zhai, Guofu Li, Jiazhong Peng   +3 more
doaj   +3 more sources

Comparison of the Power Extraction Performance of an Oscillating Hydrofoil Turbine with Different Deflector Designs

Energies, 2023
The unsteady RANS equations for a two-dimensional hydrofoil were solved using ANSYS Fluent to model and simulate the hydrofoil at a constant Reynolds number, Re, of 2 × 105 and a fixed reduced frequency, f*, of 0.14.
Arun Raj Shanmugam, Ki Sun Park, Chang Hyun Sohn   +2 more
doaj   +2 more sources

Hydrodynamic performance analysis of tower wake vortex tidal current energy capture system with swing oscillating hydrofoil

Xibei Gongye Daxue Xuebao, 2023
In order to effectively utilize the tidal current energy in offshore wind farms, a swing oscillating hydrofoil system for tidal current energy capture is proposed.
ZHU Weijun, ZHUANG Shuqing, CHEN Dongyang, CAO Jiufa, FU Shifeng, SUN Zhenye   +5 more
doaj   +2 more sources

An inertial mechanism behind dynamic station holding by fish swinging in a vortex street [PDF]

Scientific Reports, 2022
Many aquatic and aerial animal species are known to utilise their surrounding flow field and/or the induced flow field of a neighbour to reduce their physical exertion, however, the mechanism by which such benefits are obtained has remained elusive.
Sam Tucker Harvey, Valentine Muhawenimana, Stephanie Müller, Catherine A. M. E. Wilson, Petr Denissenko   +4 more
doaj   +2 more sources

Hydrodynamic and energy extraction properties of oscillating hydrofoil with double Fowler flaps [PDF]

Frontiers in Marine Science
In order to improve the energy extraction capability of oscillating hydrofoils, a dual Fowler flap structure is adopted as a device to increase lift.
Guang Sun, Qiang Zhang, Hongyuan Sun, Mingshan Chi, Gang Liu   +4 more
doaj   +2 more sources

Hydrodynamic Study of Flow-Channel and Wall-Effect Characteristics in an Oscillating Hydrofoil Biomimetic Pumping Device [PDF]

Biomimetics
To clarify how flow-channel configuration and wall spacing govern the hydrodynamic performance of an oscillating-hydrofoil biomimetic pumping device, this study conducted a systematic numerical investigation under confined-flow conditions. Using a finite-
Ertian Hua, Yang Lin, Sihan Li, Xiaopeng Wu   +3 more
doaj   +2 more sources

Role of Shape and Kinematics in the Hydrodynamics of a Fish-like Oscillating Hydrofoil

Journal of Marine Science and Engineering, 2023
In the present two-dimensional numerical study, we investigate the roles of geometrical parameters of a hydrofoil (shape/curvature of the leading and trailing edges and thickness) and kinematic parameters (phase difference between heave and pitch (ϕ)) on
Siddharth Gupta, Atul Sharma, Amit Agrawal, Mark C. Thompson, Kerry Hourigan   +4 more
doaj   +2 more sources