Results 11 to 20 of about 105,600 (307)
Time scales of dynamic stall development on a vertical-axis wind turbine blade
Flow, 2023 Vertical-axis wind turbines are excellent candidates to diversify wind energy technology, but their aerodynamic complexity limits industrial deployment.
Sébastien Le Fouest +2 more
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Lithosphere, 2013 Recent seismic imaging of the mantle beneath western North America reveals complexities interpreted as structures ranging from plumes to lithospheric drips and slab fragments. A prominent high-velocity "curtain" beneath Idaho has been interpreted as a remnant of the subducted Farallon plate left dangling within the upper mantle since >40 Ma ...
Burkett, Erin, Gurnis, Michael
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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
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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
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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
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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
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Dynamic Stall Measurements [PDF]
PAMM, 2009 AbstractForces acting statically on an airfoil in laminar flow are well known. Under turbulent conditions dynamic effects (like dynamic stall) take place. There are different theoretical models to describe dynamic stall, but very little experimental data.
Jörge Schneemann +2 more
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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
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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
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A stall diagnosis method based on entropy feature identification in axial compressors
International Journal of Mechanical System Dynamics, 2023 A stall diagnosis method based on the entropy feature extraction algorithm is developed in axial compressors. The reliability of the proposed method is determined and a parametric sensitivity analysis is experimentally conducted for two different types ...
Yang Liu +5 more
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