Stall Flutter Control of a Smart Blade Section Undergoing Asymmetric Limit Oscillations
Shock and Vibration, 2016 Stall flutter is an aeroelastic phenomenon resulting in unwanted oscillatory loads on the blade, such as wind turbine blade, helicopter rotor blade, and other flexible wing blades.
Nailu Li +4 more
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Comparing different dynamic stall models [PDF]
Wind Energy, 2012 ABSTRACTThe dynamic stall phenomenon and its importance for load calculations and aeroelastic simulations is well known. Different models exist to model the effect of dynamic stall; however, a systematic comparison is still lacking. To investigate if one is performing better than another, three models are used to simulate the Ohio State University ...
Zuijlen, A.H. van +3 more
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A Numerical Study on the Impact of Dynamic Distortions in Total Inlet Pressure on the Stability and Performance of an Aero-Engine's Axial Fan [PDF]
فناوری در مهندسی هوافضاIn preliminary jet engine design, uniform inlet conditions are typically assumed for the compression section, although real-world engines operate under non-uniform inflows that significantly affect the compressor and overall engine performance.
mostafa mahmoodi +3 more
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Tidal turbine blade load experiments for oscillatory motion [PDF]
, 2011 This paper presents blade root bending moment measurements of a horizontal-axis tidal turbine for planar oscillatory motion, conducted in a stationary water towing tank.
Bickerton, S +4 more
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Applied Sciences, 2018 This study aims to assess the dynamic stall of the wind turbine blade undergoing pitch oscillation (PO) and oscillating freestream (OF), respectively. Firstly, a thin-airfoil theoretical analysis was performed to differentiate between these two dynamic ...
Chengyong Zhu, Tongguang Wang
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Schlieren Studies of Compressibility Effects on Dynamic Stall of Airfoils in Transient Pitching Motion [PDF]
, 1990 Compressibility effects on the flowfield of an airfoil executing rapid transient pitching motion from 0 - 60 degrees over a wide range of Mach numbers and pitching rates were studied using a stroboscopic schlieren flow visualization technique.
Carr W. +12 more
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The influence of blade curvature and helical blade twist on the performance of a vertical-axis wind turbine [PDF]
, 2010 Accurate aerodynamic modeling of vertical-axis wind turbines poses a significant challenge, but is essential if the performance of such turbines is to be predicted reliably.
Brown, R.E. +2 more
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Effect of dynamic stall on the aerodynamics of vertical-axis wind turbines [PDF]
, 2011 Accurate simulations of the aerodynamic performance of vertical-axis wind turbines pose a significant challenge for computational fluid dynamics methods.
Angell R. K. +9 more
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Investigations of dynamic stall and dynamic stall control on helicopter airfoils
, 2016 Investigations into dynamic stall and dynamic stall control on airfoils are detailed using pitching airfoil experiments and numerical investigations at Mach 0.3, 0.4 and 0.5 on the airfoils EDI-M109, EDI-M112 and OA209. Two-dimensional dynamic stall was investigated, and the effects of the wind tunnel interference, rotation and the finite wing on the ...
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The phenomenon of dynamic stall [PDF]
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.
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