Results 11 to 20 of about 1,190 (227)
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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Journal of Marine Science and Engineering, 2021 Typhoons, such as Soudelor, which caused the collapse of several onshore wind turbines in 2015, pose a considerable challenge to Taiwan’s wind energy industry.
Tsung-Yueh Lin +3 more
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Unsteady aerodynamic force on a knuckleball in soccer
Procedia Engineering, 2010 AbstractThe purpose of this study is to analyze the fluid mechanics and frequency of forces acting on a knuckleball, specifically a soccer ball that was kicked and was in flight, was visualized using a smoke agent (titanium tetrachloride), and its unsteady aerodynamics were investigated. In the case of the knuckleball, the peak value of the vortex lift
Hong, Sungchan +3 more
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Numerical simulation of unsteady aerodynamic interactions of contra-rotating axial fan. [PDF]
PLoS ONE, 2018 This paper describes the investigations performed to better understand unsteady effect that develop in a contra-rotating axial fan. More specifically, this study focuses on rotor-rotor interactions effects on unsteady characteristic and blade aerodynamic
Hengxuan Luan +2 more
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Forced vibration of a sheet under periodic aerodynamic excitation
Nihon Kikai Gakkai ronbunshu, 2020 This paper describes vibration characteristics of a cantilevered flexible sheet under the periodic aerodynamic excitation. In the experiment, movable plates(exciter) are set at the upstream side from the sheet in a wind-tunnel.
Keiichi HIROAKI +2 more
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Applied Sciences, 2023 To study the aerodynamic characteristics of the convex structure of a surface-monitoring device on a high-speed train and to evaluate its impact on the aerodynamic performance of the high-speed train, numerical simulation research was conducted on three ...
Baowang Li +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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Influence of aerostatic force on measuring the aerodynamic moment during the torsional oscillation of a linear blade cascade [PDF]
MATEC Web of ConferencesAn improved method of measuring unsteady aerodynamic moments at torsional oscillations of flexibly mounted blades in a linear cascade is presented. Specifically, a systematic error was found in measuring the real part of the unsteady aerodynamic moment ...
Tsymbalyuk Volodymyr, Eret Petr
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Vortical Structure and Aerodynamics of Hawkmoth Hovering
Journal of Biomechanical Science and Engineering, 2006 A multi-block-and overset grid-based computational fluid dynamic (CFD) study is conducted for the unsteady flows about a realistic body-wing model and the force-generation in the flapping flight of hawkmoth hovering.
Hikaru AONO, Hao LIU
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Fluids, 2022 This study focused on the development of the unsteady impact of a thermally stratified energy source on a supersonic flow around an aerodynamic (AD) body in a viscous heat-conducting gas (air). Research was based on the Navier-Stokes equations.
Olga A. Azarova, Oleg V. Kravchenko
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