Results 181 to 190 of about 104,934 (214)
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Adaptive Airfoil Dynamic Stall Control
43rd AIAA Aerospace Sciences Meeting and Exhibit, 2005The purpose of this study was to investigate an adaptive airfoil design to alleviate, or greatly reduce, the negative effects of dynamic stall on rotorcraft blades. The adaptive airfoil design uses compliant structures technology to design an aerodynamically smooth, variable droop leading edge for airfoil dynamic stall control.
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Thick Airfoil Deep Dynamic Stall
2014Recent interest in vertical axis wind turbines (VAWTs) has surged due to their appearance in the built environment and their potential for deep water offshore applications. Their well-known advantages include insensitivity to the wind direction, proximity of the generator to the ground and relatively low noise levels.
Hans Mueller-Vahl +4 more
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Dynamic stall model for wind turbine airfoils
Journal of Fluids and Structures, 2007A model is presented for aerodynamic lift of wind turbine profiles under dynamic stall. The model combines memory delay effects under attached flow with reduced lift due to flow separation under dynamic stall conditions. The model is based on a backbone curve in the form of the static lift as a function of the angle of attack.
Larsen, Jesper Winther +2 more
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Compressible studies on dynamic stall
27th Aerospace Sciences Meeting, 1989The purpose of this work is to investigate the effects of compressibility on the dynamic stall phenomenon by numerical simulation of the unsteady flow. The full two-dimensional unsteady compressible Navier-Stokes equations are solved for flows over oscillating airfoils and airfoils pitching rapidly to high angles of attack.
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Unsteady and Post-Stall Model Identification Using Dynamic Stall Maneuvers
AIAA Atmospheric Flight Mechanics Conference, 2015The purpose of this work is to identify a high angle of attack model of a turboprop aircraft using data from flight tests. The classic quasi-steady stall maneuver was modified to include elevator inputs during the approach to stall, as an effort to improve the estimation of dynamic derivatives.
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Dynamic stall control via adaptive blowing
Renewable Energy, 2016Abstract An aerodynamic load control concept termed “adaptive blowing” was successfully tested on a NACA 0018 airfoil model at Reynolds numbers ranging from 1.5·10 5 to 5·10 5 . The global objective was to eliminate lift oscillations typically encountered on wind turbine blade sections.
Hanns Friedrich Müller-Vahl +3 more
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
TRANSITORY CONTROL OF DYNAMIC STALL
Proceeding of Seventh International Symposium on Turbulence and Shear Flow Phenomena, 2011George Tak Kwong Woo, Ari Glezer
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