Results 21 to 30 of about 8,580 (166)
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
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
openaire +2 more sources
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
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. The underlying modeling philosophy was that it should be based on the best understanding, or description, of the associated physical phenomena.
Sheng, W. +2 more
openaire +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
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
Numerical simulation study on dynamic stall of airfoil controlled by combined blow-suction
Hangkong gongcheng jinzhan, 2023 One of the key problems to improve the aerodynamic characteristics of airfoil is to solve the dynamic stall.This paper presents a method to control the dynamic stall of airfoil by using the combination of leading-edge suction and trailing edge suction ...
JIA Tianhao +3 more
doaj +1 more source
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
doaj +1 more source
Study on Dynamic Stall Control of Rotor Airfoil Based on Coflow Jet
International Journal of Aerospace Engineering, 2020 In this study, a dynamic stall control strategy, called the co-flow jet (CFJ), is applied to the rotor airfoil. The effect of the CFJ on the unsteady dynamic stall characteristics of the rotor airfoil is numerically investigated via numerical simulations
Jiaqi Liu +4 more
doaj +1 more source