Results 91 to 100 of about 4,618,854 (237)

Dynamic stall control on a vertical axis wind turbine aerofoil using leading-edge rod

Energy, 2019
The installation of a small rod in front of the leading edge of the symmetrical aerofoil as a passive control approach was proposed to control the dynamic stall of the Darrieus vertical-axis wind turbine (DVAWT).
Junwei Zhong, Jingyin Li, Penghua Guo, Yu Wang   +3 more
semanticscholar   +1 more source

Strategy for diagnosing the degree of dynamic stall on a vertical-axis wind turbine blade

Vertical axis wind turbines boast several advantages over their horizontal counterparts. Their development and large-scale installation has been limited due to their inherent aerodynamic complexity and in particular due to the occurrence of dynamic stall.
Le Fouest, Sebastien, Young, Anna, Mulleners, Karen, Bensason, David   +3 more
core   +1 more source

Sensitivity of Dynamic Stall Models to Dynamic Excitation on Large Flexible Wind Turbine Blades in Edgewise Vibrations

Energies
Present studies are specifically aimed at investigating the sensitivity of different dynamic stall models when exposed to various excitation frequencies. The investigations are targeted at blade edgewise vibrations.
Galih Bangga
doaj   +1 more source

Dynamic Data Analysis Of Compressor Rotating Stall. [PDF]

, 1996
LecturePg. 71-82Techniques for rotating stall verification and analysis of detrimental effects are described. Majority of dynamic pressure data presented herein are from centrifugal compressors, including one unit that required field modification.
Kushner, Frank
core   +1 more source

μ-PIV and ELDV wind tunnel investigations of the laminar separation bubble above a helicopter blade tip

, 2005
Detailed studies of the boundary layer profile and the characteristics of the flow velocity distribution close to the leading edge of a helicopter blade profile were conducted using the embedded laser doppler velocimetry (ELDV) and stereo-PIV.
Geissler, Wolfgang, Rondot, C., Berton, E., Raffel, Markus, Favier, D., Nsimba, M., Maresca, C.   +6 more
core  

Aerodynamic Performance of Wind Turbine Airfoil DU 91-W2-250 under Dynamic Stall

Applied Sciences, 2018
Airfoils are subjected to the ‘dynamic stall’ phenomenon in significant pitch oscillations during the actual operation process of wind turbines.
Shuang Li, Lei Zhang, Ke Yang, Jin Xu, Xue Li   +4 more
doaj   +1 more source

Unsteady Flow Physics of Airfoil Dynamic Stall

AIAA Journal, 2019
A series of wind-tunnel experiments was conducted on a dynamically pitching NACA 0012 airfoil in order to understand the unsteady flow physics associated with dynamic stall at a transitional Reynol...
Rohit Gupta, Phillip J. Ansell
semanticscholar   +1 more source

The AFDD International Dynamic Stall Workshop on Correlation of Dynamic Stall Models with 3-D Dynamic Stall Data

, 1996
A variety of empirical and computational fluid dynamics two-dimensional (2-D) dynamic stall models were compared to recently obtained three-dimensional (3-D) dynamic stall data in a workshop on modeling of 3-D dynamic stall of an unswept, rectangular ...
Tan, C. M., Carr, L. W.
core   +1 more source

Dynamic Stall

, 2004
The present annual report describes the details of work within the scope of the DLR/ONERA common project Dynamic Stall during the year 2003, the second year of the project.
Geißler, W.
core  

The phenomenon of dynamic stall

, 1981
The general features of dynamic stall on oscillating airfoils are explained in terms of the vortex shedding phenomenon, and the important differences between static stall, light dynamic stall, and deep stall are described.
Mccroskey, W. J.
core   +1 more source