Results 231 to 240 of about 75,453 (258)

Experimental and Numerical Studies of a High Solidity, Low Tip Speed Ratio DAWT

48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010
A numerical and experimental investigation of a Diffuser Augmented Wind Turbine (DAWT) has been conducted. Historically, the advantages of DAWT concept have been negated by higher material cost and less than stellar real world performance. The current configuration combines a duct augmentation concept with an optimized, high solidity, twisted flat ...
Michael Moeller, Kenneth Visser
openaire   +1 more source

Achieving optimum tip-speed-ratio of a two-mass wind turbine system

2016 IEEE International Conference on Power and Energy (PECon), 2016
This paper proposes a three term PID controller to achieve optimum tip-speed ratio of a variable speed fixed pitch two-mass wind turbine system. The main advantage of the method is the functional simplicity and the robust performance in a wide range of operating condition.
Nor Syaza Farhana Mohamad Murad, Muhammad Nizam Kamarudin, Sahazati Md Rozali, Mohd Hendra Hairi   +3 more
openaire   +1 more source

Influence of Tip Speed Ratio on wake features of a Vertical Axis Wind Turbine

Journal of Wind Engineering and Industrial Aerodynamics, 2020
Abstract Dependence of wake features of a Vertical Axis Wind Turbine (VAWT) on Tip Speed Ratio ( T S R ) is studied in the present work, using a computational approach, based on Large-Eddy Simulation (LES). The overall methodology was validated in an earlier study, via comparison with Particle Image Velocimetry (PIV) wind-tunnel measurements ...
openaire   +2 more sources

515 The influence of tip speed ratio on a Savonius rotor wake

The Proceedings of Ibaraki District Conference, 2006
Hiroaki FUJISHIMA, Eizi KATO, Tsutomu TAGHIKAWA   +2 more
openaire   +1 more source

Tool-tip dynamics in micromachining with arbitrary tool geometries and the effect of spindle speed

International Journal of Machine Tools and Manufacture, 2023
Burak Ozdoganlar, Bekir Bediz, Shivang Shekhar   +2 more
exaly  

Effect of tip-speed ratio on induced velocities near a lifting rotor

2017
A theoretical investigation of the asymmetry of induced flow in the vicinity of a lifting rotor in forward flight has been conducted. The analysis is based upon an asymmetric wake which is a logical extension of that used for previous investigations. Equations for the induced velocities at an arbitrary point in space are presented in a form suitable ...
openaire   +1 more source

Innovative design method and experimental investigation of a small-scale and very low tip-speed ratio wind turbine

Experimental Thermal and Fluid Science, 2022
Florent Ravelet, Martin Bourhis
exaly  

Influence of rotating speed on tip leakage vortex in a mixed flow pump as turbine at pump mode

Renewable Energy, 2020
Lei Tan, Yadong Han
exaly  

Effects of Tip Speed Ratios on the Blade Forces of a Small H-Darrieus Wind Turbine

Energies, 2021
Sajid Ali, Choon-Man Jang
exaly  

Tip wear and tip breakage in high-speed atomic force microscopes

Ultramicroscopy, 2019
Gaoliang Dai
exaly