Results 11 to 20 of about 105,358 (290)
Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow [PDF]
Journal of Aerospace Technology and Management, 2019 In this research, viscous, unsteady and turbulent fluid flow is simulated numerically around pitching NACA0012 airfoil in the dynamic stall area. The Navier-Stokes equations are discretized based on the finite volume method and are solved by the PIMPLE ...
Mojtaba Honarmand +3 more
doaj +2 more sources
Characterization of dynamic stall of a wind turbine airfoil with a high Reynolds number [PDF]
Wind Energy ScienceThis study shows an extensive analysis of dynamic stall on wind turbine airfoils, preparing for the development of a reduced-order model applicable to thick airfoils (t/c>0.21) in the future.
H. R. Kim +4 more
doaj +2 more sources
Energies, 2022 In this paper, a thorough 2D unsteady computational fluid dynamic analysis was performed on a pitching airfoil to properly comprehend the dynamic stall and aerodynamic forces.
Tariq Ullah +3 more
doaj +1 more source
Energies, 2023 Considering the dynamic stall effects in engineering calculations is essential for correcting the aerodynamic loads acting on wind turbines, both during power production and stand-still cases, and impacts significantly the turbine aeroelastic stability ...
Galih Bangga +2 more
doaj +1 more source
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 +1 more source
Combined Effect of Rotational Augmentation and Dynamic Stall on a Horizontal Axis Wind Turbine
Energies, 2019 Rotational augmentation and dynamic stall have been extensively investigated on horizontal axis wind turbines (HAWTs), but usually as separate topics. Although these two aerodynamic phenomena mainly determine the unsteady loads and rotor performance, the
Chengyong Zhu, Tongguang Wang, Wei Zhong
doaj +1 more source
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 +2 more sources
Numerical Study on Dynamic-Stall Characteristics of Finite Wing and Rotor
Applied Sciences, 2019 To study the three-dimensional effects on the dynamic-stall characteristics of a rotor blade, the unsteady flowfields of the finite wing and rotor were simulated under dynamic-stall conditions, respectively. Unsteady Reynolds-averaged Navier⁻Stokes
Qing Wang, Qijun Zhao
doaj +1 more source
Design and Development of a Compressible Dynamic Stall Facility [PDF]
, 1989 A dynamic stall facility offering a unique new capability for studies of compressibility effects on dynamic stall is described. This facility features complete visual access by mounting the test airfoil between optical-quality glass windows which are ...
Carr, L., Chandrasekhara, M.
core +1 more source
Separation Control on Oscillating Airfoils Using Moving Surface Control
NUST Journal of Engineering Sciences, 2008 A numerical investigation has been conducted to study the effectiveness of Moving Surface Control method in controlling dynamic stall in oscillating airfoils.
S. R. Sheikh, Omar A. Qazi
doaj +1 more source