Results 61 to 70 of about 687 (167)
Development of an early stage hydrofoil design tool including unsteady hydrodynamics
Applied Ocean ResearchConceptual design of hydrofoil craft and in particular hydrofoils is challenging since the hydrodynamics is governed by multiple complex physical phenomena such as the effect of the free surface, turbulence and unsteadiness due to waves and/or operations.
T.P. Scholcz +5 more
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PEMBUATAN HYDROFOIL TURBIN DARRIEUS
Sisfo: Jurnal Ilmiah Sistem Informasi, 2018 Hydrokinetic water turbines do not require high water pressure (head) to work.Another advantage of the Darrieus turbine is that it is less sensitive to turbulencebut sensitive to flow direction. Among some forms of turbine turbine turbinegeometry, straight-angled geometry (or H-Darrieus) is more popular due to easierfabrication and simpler construction.
Muharnif M, Elvy Sahnur Nasution
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Optimal Design and Numerical Simulation on Fish-Like Flexible Hydrofoil Propeller
Polish Maritime Research, 2016 Hydrofoil is widely used in underwater vehicle for the excellent hydrodynamic characteristics. Currently, researches are mostly about the rigid hydrofoil while the flexible hydrofoil, like the caudal fin, has not been studied adequately.
Xue Gang +6 more
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Autonomous Navigation and Automated Control for a Small Balancing Hydrofoil Craft
Journal of Marine Science and EngineeringHydrofoil vessels have recently re-gained interest, presenting a more efficient and comfortable alternative to regular vessels. However, research in hydrofoils is limited by the high cost and complexity of developing a complete vessel to use for ...
Tiziano Wehrli, Thomas Bräunl
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Polish Maritime ResearchThe trimaran vessel performs well both in calm waters and in waves. To improve its hydrodynamic efficiency, a hydrofoil is installed at the rear part of the trimaran. The primary aim of this hydrofoil is to reduce the overall resistance while the ship is
Ghadimi Aliakbar +2 more
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Hydrodynamic and energy extraction properties of oscillating hydrofoil with double Fowler flaps
Frontiers in Marine ScienceIn 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 +4 more
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MachinesIn order to study the effect of the pumping depth and pumping frequency of the flapping hydrofoil device on suspended solids in the waters, this paper takes raceway aquaculture as an example, and introduces a flapping hydrofoil device to improve the ...
Ertian Hua +5 more
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Journal of King Saud University: Engineering SciencesTidal energy is a clean and predictable power source commonly harnessed using horizontal-axis tidal turbines. The power generation process of these turbines is influenced by various elements, including the hydrofoil performance metrics such as the lift ...
Muhammad Ihsan Masykur, Harinaldi
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Energy-harvesting performance of a fully-passive coupled-pitching hydrofoil: A numerical study
Applied Ocean ResearchA fully-passive coupled-pitching hydrofoil is a developing trend for tidal-current power capture in the future. A two-dimensional numerical model was established to investigate the hydrodynamic characteristics and energy-harvesting performances of the ...
Zhen Liu, Xinyu Song, Yangshun Zhu
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Journal of Marine Science and EngineeringTo investigate the influence of the chord length and frequency of an oscillating hydrofoil device on the discharge characteristics of floating particulate matter, in this study, we take raceway aquaculture as an example and systematically compare and ...
Ertian Hua +5 more
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