Results 21 to 30 of about 127,683 (368)
Leading-edge vortex development on a pitching flat plate with multiple leading edge geometries
Experimental Thermal and Fluid Science, 2018 This article investigates the dynamic stall of a pitching flat plate in order to facilitate lift control in applications such as flapping wings and micro-aerial vehicles.
R.R. Leknys +7 more
core +4 more sources
Passing-over leading-edge vortex: The thrust booster in heaving airfoil [PDF]
AIP Advances, 2019 The thrust generated by heaving airfoil in incompressible flow is studied both numerically and theoretically. It is found that the behaviors of leading-edge vortex (LEV) under different airfoil’s transverse velocities have an important influence on the ...
An-Kang Gao +3 more
doaj +2 more sources
THE LEADING-EDGE VORTEX OF YACHT SAILS [PDF]
Ocean Engineering, 2017 International audienceIt has been suggested that a stable Leading Edge Vortex (LEV) can be formed from the sharp leading edge of asymmetric spinnakers.
Viola, Ignazio Maria +7 more
core +6 more sources
Leading Edge Vortex Development on a Pitch-Up Airfoil
Volume 1B, Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Fundamental Issues and Perspectives in Fluid Mechanics, 2013 The dynamics of leading edge vortex (LEV) on an airfoil due to pitch-up motion is investigated using computational fluid dynamics techniques to solve the Navier-Stokes equations on composite overlapping grids. The objectives are to (1) quantify the contribution of circulatory effects caused by vortex development, and non-circulatory effects due to ...
Kyle Hord, Yongsheng Lian
openaire +2 more sources
Lift and the leading edge vortex
50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2012 Leading edge vortices are considered to be important in generating the high lift coefficients observed in insect flight and may therefore be relevant to micro-air vehicles.
Pitt Ford, CW, Babinsky, H, ,
core +3 more sources
Sectional Leading Edge Vortex Lift and Drag Coefficients of Autorotating Samaras
Aerospace, 2023 Autorotating samaras such as Sycamore seeds are capable of descending at exceptionally slow speeds and the secret behind this characteristic is attributed to a flow mechanism known as the leading edge vortex (LEV).
Byung Kwon Jung, Djamel Rezgui
doaj +3 more sources
Oscillations of Leading-Edge Vortex Breakdown Locations over a Delta Wing [PDF]
AIAA Journal, 2018 This paper presents an experimental investigation of the oscillations of the leading-edge vortex breakdown locations over a slender delta wing with a 75 deg sweep angle.
Lu Shen, Chih‐Yung Wen
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On the maintenance of an attached leading-edge vortex via model bird alula [PDF]
Journal of Fluid Mechanics, 2020 Researchers have hypothesized that the post-stall lift benefit of bird’s alular feathers, or alula, stems from the maintenance of an attached leading-edge vortex (LEV) over their thin-profiled, outer hand wing. Here, we investigate the connection between
Thomas Linehan, Kamran Mohseni
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Dynamic stall control by leading edge vortex generators
Journal of the American Helicopter Society, 2008 A new concept of passive dynamic-stall control was developed and tested on an OA 209 rotorcraft airfoil during two wind-tunnel test campaigns in 2004 and 2005. Small vortex generators are mounted at the leading edge of the rotor blade.
Richter, Kai +6 more
core +4 more sources
The role of the leading edge vortex in lift augmentation of steadily revolving wings: a change in perspective. [PDF]
J R Soc Interface, 2017 Nabawy MRA, Crowther WJ.
europepmc +2 more sources