Results 1 to 10 of about 736 (162)
Effect of unsteady cavitation on hydrodynamic performance of NACA 4412 Hydrofoil with novel triangular slot [PDF]
HeliyonThis study demonstrates the hydrodynamic performance of a modified NACA 4412 hydrofoil and compares it with the base NACA 4412 hydrofoil in the presence of cavitation.
Sayan Biswas, R. Harish
doaj +2 more sources
International Journal of Naval Architecture and Ocean Engineering, 2018 Hydrofoil is the direct component to generate thrust for underwater glider. It is significant to improve propulsion efficiency of hydrofoil. This study optimizes the shape of a hydrofoil using Free-Form Deformation (FFD) parametric approach and Surrogate-
Xinjing Wang, Baowei Song, Peng Wang
exaly +3 more sources
Performance of a hydrofoil operating close to a free surface over a range of angles of attack
International Journal of Naval Architecture and Ocean Engineering, 2021 Performance of a NACA 634-021 hydrofoil in motion under and in close proximity of a free surface for a large range of angles of attack is studied.
Zao Ni, Manhar Dhanak, Tsung-Chow Su
exaly +3 more sources
Control mechanisms of different bionic structures for hydrofoil cavitation [PDF]
Ultrasonics SonochemistryCavitation limits the efficient and stable operation of rotating machinery. The exploration of control methods for hydrofoil cavitation is important for improving the performance of hydraulic machinery.
Qi Yang +5 more
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Various Wavy Leading-Edge Protuberance on Oscillating Hydrofoil Power Performance [PDF]
Journal of Applied Fluid Mechanics, 2023 This paper is presented to compare various wavy leading-edge protuberances on oscillating hydrofoil performance and power efficiency. The unsteady turbulent 3D flow simulations were carried out by using the StarCCM+ software.
A. Abbasi +3 more
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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 +2 more
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Analysis of cavitation number and scale effect of hydrofoil cavitation initiation
Zhongguo Jianchuan Yanjiu, 2022 ObjectiveWhen the cavitation number drops to a certain critical value, the pressure at the leading edge of an underwater hydrofoil will decrease and cavitation will occur.
Shengming CHANG +4 more
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Numerical prediction of hydrodynamic performance of differently shaped flapping foil propulsors
Zhongguo Jianchuan Yanjiu, 2021 ObjectivesThe hydrodynamic performance of three-dimensional hydrofoils with different shapes is studied in order to find the optimal hydrofoil geometry.Methods NACA 0012 hydrofoil model with different aspect ratios, tip ratios, forward-swept and back ...
Shenghao ZHANG, Lei MEI, Junwei ZHOU
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On the singing of hydrofoils [PDF]
The Journal of the Acoustical Society of America, 1976 Flexural vibrations of hydrofoils can be caused by the formation of vortices at their trailing edges. These vortices are formed at a predominant frequency which depends on the water velocity and a characteristic transverse wake dimension. When the shedding frequency corresponds to a flexural resonance frequency of the hydrofoil the severe vibrations ...
W. K. Blake, L. J. Maga, G. Finkelstein
openaire +1 more source
A Study on the Performance Variation of a Three-Dimensional Hydrofoil Using Jet Flow
한국해양공학회지, 2021 As one of the development directions of high-performance ships to reduce greenhouse gas emissions, there is research on high-performance propellers. However, in the case of conventional screw propellers, as they have been studied for a long time, there ...
Myeong-Jin Eom +4 more
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