Results 61 to 70 of about 104,934 (214)
Energies, 2015 The complex unsteady aerodynamics of vertical axis wind turbines (VAWT) poses significant challenges to the simulation tools. Dynamic stall is one of the phenomena associated with the unsteady conditions for VAWTs, and it is in the focus of the study ...
Eduard Dyachuk, Anders Goude
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Analysis of the development of dynamic stall based on oscillating airfoil experiments [PDF]
The effects of dynamic stall on airfoils oscillating in pitch were investigated by experimentally determining the viscous and inviscid characteristics of the airflow on the NACA 0012 airfoil and on several leading-edge modifications.
Carr, L. W. +2 more
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Dynamic and static stall data in relation to airfoil stall at subsonic ...
Ericsson, L. E., Reding, J. P.
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International Journal of ThermofluidsThe dynamic stall phenomenon has been extensively studied in literature. Despite various innovative interventions focused on understanding its behavior, there are few efforts to study the influence of heat transfer on the dynamic stall performance of ...
Abbas Dorri, Masoud Darbandi
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Dynamic stall reattachment revisited
Dynamic stall on airfoils is an undesirable and potentially dangerous phenomenon. The motto for aerodynamic systems with unsteadily moving wings, such as helicopters or wind turbines, is that prevention beats recovery. In case prevention fails or is not feasible, we need to know when recovery starts, how long it takes, and how we can improve it.
Rezapour, Sahar, Mulleners, Karen
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HAWT performance with dynamic stall [PDF]
, 1986 In this report we calculated the effects of flow nonuniformities (wing shear, tower wake, yaw, and large-scale turbulence) on the performance of a horizontal axis wind turbine, accounting for dynamic stall. We modified the PROP program to incorporate and compare these effects with the uniform flow case.
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Simulasi Numerik Dynamic Stall Pada Airfoil Yang Berosilasi [PDF]
, 2012 Kebutuhan analisa pada sudu helikopter, kompresor, kincir angin dan struktur streamline lainya yang beroperasi pada angle of attack yang tinggi dan melibatkan instationary effects yang disebut dynamic stall menjadi semakin penting.
Bangga, G. S. (Galih) +1 more
core
Control of Compressible Dynamics Stall Using Microjets
Volume 2: Symposia, Parts A, B, and C, 2003 Control of the dynamic stall process of an NACA 0015 airfoil undergoing periodic pitching motion is investigated experimentally in a high-speed wind tunnel facility. Multiple microjet nozzles distributed uniformly in the first 15% chord from the airfoil’s leading edge are used for the control. Point Diffraction Interferometry (PDI) technique is used to
Shih, C. +3 more
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Dynamic Stall Control on the Wind Turbine Airfoil via a Co-Flow Jet
Energies, 2016 Dynamic stall control of a S809 airfoil is numerically investigated by implementing a co-flow jet (CFJ). The numerical methods of the solver are validated by comparing results with the baseline experiment as well as a NACA 6415-based CFJ experiment ...
He-Yong Xu +2 more
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Control of unsteady separated flow associated with the dynamic stall of airfoils [PDF]
The two principal objectives of this research were to achieve an improved understanding of the mechanisms involved in the onset and development of dynamic stall under compressible flow conditions, and to investigate the feasibility of employing adaptive ...
Wilder, Michael C.
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