Results 61 to 70 of about 1,827 (197)

A Tale of Evolution of the Central Indian Tectonic Zone (CITZ) With Glimpses on Pre‐Suture Plate Margin Depositional History

open access: yesGeological Journal, Volume 60, Issue 2, Page 404-430, February 2025.
Present study explains the current understanding about the complex evolution of the CITZ. New zircon geochronological data from Mahakoshal Basin is used to document the pre‐suture history of the southern margin of Bundelkhand Craton where Mahakoshal Basin developed as a back‐arc basin and remained open even after 1700 Ma.
A. Sharma   +3 more
wiley   +1 more source

Partial cavity instabilities [PDF]

open access: yes, 1998
This paper reviews some of the literature on partial cavity instabilities on single hydrofoils and then summarizes the striking differences in the appearance and behavior of partial cavities on swept foils (as opposed to two-dimensional, unswept foils ...
Brennen, C. E., Duttweiler, M. E.
core  

Hydrodynamic characteristics of wing-in-ground effect oscillating hydrofoil on power extraction performance

open access: yesEnergy Reports, 2022
The energy contained in the tidal motion of the seas and oceans has the potential to be a significant source ofrenewable energy. The oscillating hydrofoil current-energy turbine has a good performance to extract energyfrom the coupling of its heaving and pitching motions.
Weijie Mo   +7 more
openaire   +2 more sources

Wind Turbine Optimization by Blade Element Momentum Method and Particle Swarm Optimization Technique

open access: yesJournal of Engineering, Volume 2025, Issue 1, 2025.
The aerodynamic efficiency of wind turbines is greatly influenced by the shape of their airfoils. In this study, four airfoils were optimized to enhance the performance of a small horizontal axis wind turbine. The optimization process involved adjusting the thickness and camber of the airfoils using the blade element momentum method and particle swarm ...
Hossein Seifi Davari   +4 more
wiley   +1 more source

Cloud cavitation on an oscillating hydrofoil [PDF]

open access: yes, 1994
Cloud cavitation, often formed by the breakdown of a sheet or vortex cavity, is believed to be responsible for much of the noise and erosion damage that occurs under cavitating conditions.
Brennen, C. E.   +2 more
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Identification of the vortex in the main flow passage of a multiphase pump and the relationship with pressure fluctuation

open access: yesEnergy Science &Engineering, Volume 12, Issue 10, Page 4394-4413, October 2024.
This study develops a method of identifying vortices in the impeller channel of the multiphase pump, and reveals the intrinsic connection between the vortices and pressure fluctuations in the main flow passage. These findings offer some suggestions for eliminating the influence of vortices and enhancing the pressurizing capabilities of multiphase pumps.
Guangtai Shi   +4 more
wiley   +1 more source

Cloud cavitation with particular attention to pumps [PDF]

open access: yes, 2008
In many cavitating liquid flows, when the number and concentration of the bubbles exceeds some critical level, the flow becomes unsteady and large clouds of cavitating bubbles are periodically formed and then collapse when convected into regions of ...
Brennen, Christopher E.
core  

Computational Study of Oscillating Hydrofoil with Different Plunging/Pitching Frequency

open access: yesJournal of Aero Aqua Bio-mechanisms, 2010
A numerical investigation of an oscillating hydrofoil with unequal plunging/pitching frequency is conducted by solving unsteady Navier-Stokes equations. Studies are performed for the impact of different frequency ratio on the wake structure and propulsion parameters over a wide range of plunging amplitude, pitching amplitude and oscillating reduced ...
Qing Xiao, Wei Liao
openaire   +2 more sources

A Soft Robotic Morphing Wing for Unmanned Underwater Vehicles

open access: yesAdvanced Intelligent Systems, Volume 6, Issue 6, June 2024.
This study presents the design and hydrodynamic characterization of a soft wing for implementation on underwater gliders. Through hydraulic actuation, the soft wing deforms and adjusts its lift‐to‐drag ratio, which ranges from −70% to +10% with respect to a rigid wing.
Andrea Giordano   +12 more
wiley   +1 more source

Experimental and Numerical Studies on a Centrifugal Pump with 2D-Curved Blades in Cavitating Condition [PDF]

open access: yes, 2001
In the presented study a special test-pump with 2D curvature blade geometry in cavitating and non-cavitating conditions was investigated using different experimental techniques and a 3D numerical model of cavitating flows.
Coutier-Delgosha, O.   +4 more
core  

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