Results 1 to 10 of about 105,501 (210)
A new stall-onset criterion for low speed dynamic-stall [PDF]
Journal of Solar Energy Engineering, 2005 The Beddoes/Leishman dynamic-stall model has become one of the most popular for the provision of unsteady aerofoil data embedded in much larger codes.
Beddoes +20 more
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Dynamic stall development [PDF]
Experiments in Fluids, 2013 Dynamic stall on an oscillating airfoil was investigated by a combination of surface pressure measurements and time-resolved particle image velocimetry. Following up on previous work on the onset of dynamic stall (Mulleners and Raffel in Exp Fluids 52(3):
Mulleners, Karen, Raffel, Markus
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Dynamic Stall of a Vertical-Axis Wind Turbine and Its Control Using Plasma Actuation
Energies, 2019 In this paper, a dynamic stall control scheme for vertical-axis wind turbine (VAWT) based on pulsed dielectric-barrier-discharge (DBD) plasma actuation is proposed using computational fluid dynamics (CFD).
Lu Ma +3 more
doaj +3 more sources
Development of a second-order dynamic stall model [PDF]
Wind Energy Science, 2020 Dynamic stall phenomena carry the risk of negative damping and instability in wind turbine blades. It is crucial to model these phenomena accurately to reduce inaccuracies in predicting design driving (fatigue and extreme) loads. Some of the inaccuracies
N. Adema, M. Kloosterman, G. Schepers
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Dynamic airfoil stall investigations [PDF]
, 1992 Experimental and computational investigations of the dynamic stall phenomenon continue to attract the attention of various research groups in the major aeronautical research laboratories. There are two reasons for this continued research interest. First,
Carr, L. W. +3 more
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Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements [PDF]
E3S Web of Conferences, 2021 An accurate estimation of rotating stall is one of the key technologies for high-pressure centrifugal compressors. Several techniques have been proposed to detect the stall onset; inter alia, few dynamic pressure probes have been shown to not only ...
Romani Luca +6 more
doaj +1 more source
Applied Sciences, 2020 The dynamic stall characteristics of rotor airfoil are researched by employing unsteady Reynolds-Averaged Navier-Stokes (RANS) method under oscillating freestream velocity conditions.
Qing Wang, Qijun Zhao
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Experimental Study of Dynamical Airfoil and Aerodynamic Prediction
Actuators, 2022 Dynamic stall is a critical limiting factor for airfoil aerodynamics and a challenging problem for active flow control. In this experimental study, dynamic stall was measured by high-frequency surface pressure tapes and pressure-sensitive paint (PSP ...
Zheyu Shi +3 more
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Modeling dynamic loads on oscillating airfoils with emphasis on dynamic stall vortices
Wind Energy, 2021 We present a modified version of the ONERA dynamic stall model for improving the prediction of the unsteady forces and load overshoots generated by the shedding of dynamic stall vortices.
Ayman Mohamed, David H. Wood
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The onset of dynamic stall revisited [PDF]
Experiments in Fluids, 2011 Dynamic stall on a helicopter rotor blade comprises a series of complex aerodynamic phenomena in response to the unsteady change of the blade’s angle of attack. It is accompanied by a lift overshoot and delayed massive flow separation with respect to static stall. The classical hallmark of the dynamic stall phenomenon is the dynamic stall vortex.
Mulleners, Karen, Raffel, Markus
openaire +1 more source