End effects in the wake of a hydrofoil working downstream of a propeller
The Physics of Fluids, 2023 Large-eddy simulations are reported on a system consisting of a marine propeller and a downstream, semi-infinite hydrofoil, carried out on a cylindrical grid of about 3.8 × 109 points.
A. Posa
semanticscholar +1 more source
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 +3 more
doaj +1 more source
Investigation on transition characteristics of laminar separation bubble on a hydrofoil
The Physics of Fluids, 2023 The phenomenon of water–jet pump stall can be ascribed to the development of blade boundary layer separation with the transition process playing a significant role in this separation.
Changliang Ye +5 more
semanticscholar +1 more source
Investigation of cavitation bubble dynamics near an asymmetric hydrofoil [PDF]
International Journal of Fluid EngineeringThe dynamic behavior of a cavitation bubble near an asymmetric hydrofoil is investigated experimentally through high-speed photography and theoretically using a Kelvin impulse model.
Hongbo Wang +5 more
doaj +1 more source
Hydrodynamic Characteristics Analysis of Amphibious HydrofoilVehicle Based on LBM-LES Method
Hangkong gongcheng jinzhan, 2019 At present, research on the aerodynamics and hydrodynamic characteristics of a amphibious hydrofoil vehicle at home and abroad is still at exploration and development stage.
Feng Huanhuan +3 more
doaj +1 more source
Assessment of RANS turbulence models and Zwart cavitation model empirical coefficients for the simulation of unsteady cloud cavitation [PDF]
, 2019 The numerical simulation of unsteady cavitation flows is sensitive to the selected models and associated parameters. Consequently, three Reynolds Average Navier-Stokes (RANS) turbulence models and the Zwart cavitation model were selected to assess their ...
Escaler Puigoriol, Francesc Xavier +1 more
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Experimental study of dynamic response of passive flapping hydrofoil in regular wave
The Physics of Fluids, 2023 The hydrofoil harnesses wave energy and converts it into thrust. In this paper, we present the results of the first experimental study investigating the dynamic behavior of a fully passive foil with spring-loaded pitch and heave in regular waves.
Junxian Wang +4 more
semanticscholar +1 more source
Study on Noise Attenuation Characteristics of Hydrofoil with Specific Cavitation Number
Archives of Acoustics, 2023 In this study, the modified Sauer cavitation model and Kirchhoff-Ffowcs Williams and Hawkings (K-FWH) acoustic model were adopted to numerically simulate the unsteady cavitation flow field and the noise of a three-dimensional NACA66 hydrofoil at a ...
He XIAOHUI +3 more
doaj +1 more source
The acoustic signature of a propeller–hydrofoil system in the far field
The Physics of Fluids, 2023 Data from Large-Eddy Simulations on a grid consisting of 3.8 billion points are utilized to reconstruct the acoustic far field of a propeller–hydrofoil system, using the Ffowcs-Williams and Hawkings acoustic analogy.
A. Posa +3 more
semanticscholar +1 more source
Optimal Design and Dynamic Analysis of Hydrofoil Mechanism of Wave Glider
Journal of Marine Science and Engineering, 2022 A wave glider can convert vertical wave motion into its forward propulsion. There are many factors affecting the propulsion performance of a wave glider.
Hongqiang Sang +5 more
doaj +1 more source