Results 21 to 30 of about 8,125 (264)

Experimental Study on the Relationship Between Cavitation and Lift Fluctuations of S-Shaped Hydrofoil

Frontiers in Energy Research, 2021
In order to study the energy loss of bi-directional hydraulic machinery under cavitation conditions, this paper uses high-speed photography combined with six-axis force and torque sensors to collect cavitating flow images and lift signals of S-shaped ...
Haiyu Liu, Pengcheng Lin, Fangping Tang, Ye Chen, Wenpeng Zhang, Shikai Yan   +5 more
doaj   +1 more source

Cavitation Evolution around a NACA0015 Hydrofoil with Different Cavitation Models Based on Level Set Method

Applied Sciences, 2019
Cavitation is a complex multiphase flow phenomenon that is usually involved in marine propulsion systems, and can be simulated with a couple of methods.
An Yu, Qinghong Tang, Daqing Zhou
doaj   +1 more source

Dynamics of laser-induced cavitation bubble during expansion over sharp-edge geometry submerged in liquid – an inside view by diffuse illumination

Ultrasonics Sonochemistry, 2021
Laser ablation in liquids is growing in popularity for various applications including nanoparticle production, breakdown spectroscopy, and surface functionalization.
Matej Senegačnik, Kohei Kunimoto, Satoshi Yamaguchi, Koki Kimura, Tetsuo Sakka, Peter Gregorčič   +5 more
doaj   +1 more source

Study on Re-entrant Jet Pressure Characteristics of Ventilated Cavitating Vehicles

DEStech Transactions on Engineering and Technology Research, 2019
When the re-entrant jet phenomenon generation at the end of ventilated cavity, body surface form high pressure under the meanflow impact. This high pressure moves downstream with the development of ventilated cavitation, and will arouses significant effect on the motion stability of the body.
Jing ZHAO, Jing LI, Qi-dong YU, Hong-zhi LU, Hong-liang WEI   +4 more
openaire   +2 more sources

Compressibility Effects on Cavity Dynamics behind a Two-Dimensional Wedge

Journal of Marine Science and Engineering, 2020
To understand cavity dynamics, many experimental and computational studies have been conducted for many decades. As computational methods, incompressible, isothermal compressible, and fully compressible flow solvers were used for the purpose.
Sunho Park, Woochan Seok, Sung Taek Park, Shin Hyung Rhee, Yohan Choe, Chongam Kim, Ji-Hye Kim, Byoung-Kwon Ahn   +7 more
doaj   +1 more source

Analysis of the Formation Mechanism and Evolution of the Perpendicular Cavitation Vortex of Tip Leakage Flow in an Axial-Flow Pump for Off-Design Conditions

Journal of Marine Science and Engineering, 2021
To understand the formation mechanism and evolution process of the perpendicular cavitation vortex (PCV) of an axial flow pump for off-design conditions, turbulent cavitating flows were numerically investigated using the rotation curvature-corrected ...
Hu Zhang, Jianbo Zang, Weidong Shi, Desheng Zhang   +3 more
doaj   +1 more source

Computational Analysis of Cavitating Flows around a Marine Propeller Using Incompressible, Isothermal Compressible, and Fully Compressible Flow Solvers

Journal of Marine Science and Engineering, 2023
This research investigates cavitation around a marine propeller, employing computational fluid dynamic (CFD) solvers, including an incompressible, isothermal compressible, and fully compressible flow.
Joseph Mwangi Ng’aru, Sunho Park
doaj   +1 more source

Study of the cavitating instability on a grooved Venturi profile [PDF]

, 2014
Instabilities of a partial cavity developed on a hydrofoil, a converging-diverging step, or in an interblade channel have already been investigated in many previous works. The aim of this study is to evaluate a passive control method of the sheet cavity.
DANLOS, Amélie, BAKIR, Farid, RAVELET, Florent, MÉHAL, Jean-Elie, COUTIER-DELGOSHA, Olivier   +4 more
core   +1 more source

Study of unsteady cavitation on NACA66 hydrofoil using dynamic cubic nonlinear subgrid-scale model

Advances in Mechanical Engineering, 2015
In this article, we describe the use of a new dynamic cubic nonlinear model, a new nonlinear subgrid-scale model, for simulating the cavitating flow around an NACA66 series hydrofoil. For comparison, the dynamic Smagorinsky model is also used.
Xianbei Huang, Wei Yang, Zhuqing Liu, Yaojun Li   +3 more
doaj   +1 more source

Numerical Study on the Influence of Plasma Actuation on the Cavitation Characteristics of Hydrofoil [PDF]

Journal of Applied Fluid Mechanics
In order to investigate the influence of plasma actuation on cavitation in the flow field around a hydrofoil, the RNG k-ε turbulence model with density correction, the Schnerr–Sauer cavitation model, and the plasma phenomenological model were used to ...
R. Guo, L. Wang, R. Li, X. Zhang
doaj   +1 more source