Results 31 to 40 of about 127,683 (368)

The leading-edge vortex on a rotating wing changes markedly beyond a certain central body size. [PDF]

open access: yesR Soc Open Sci, 2018
Stable attachment of a leading-edge vortex (LEV) plays a key role in generating the high lift on rotating wings with a central body. The central body size can affect the LEV structure broadly in two ways.
Bhat SS   +4 more
europepmc   +2 more sources

Petiolate wings: effects on the leading-edge vortex in flapping flight. [PDF]

open access: yesInterface Focus, 2017
The wings of many insect species including crane flies and damselflies are petiolate (on stalks), with the wing planform beginning some distance away from the wing hinge, rather than at the hinge.
Phillips N, Knowles K, Bomphrey RJ.
europepmc   +2 more sources

The fish tail motion forms an attached leading edge vortex [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2013
Iman Borazjani, Mohsen Daghooghi
exaly   +2 more sources

Leading edge vortex dynamics in airfoils: Effect of pitching motion at large amplitudes [PDF]

open access: yesJournal of Fluids and Structures, 2021
Airfoils pitching in the stalled regime have been of keen interest in recent years due to their desirable aerodynamic force characteristics. In this study, we are numerically investigating the unsteady flow past a NACA 0012 airfoil under sinusoidally ...
Akhil Aravind, P. Seshadri, A. De
semanticscholar   +1 more source

Blunt leading-edge effect on spanwise-varying leading-edge contours of an UCAV configuration

open access: yesJournal of Fluid Science and Technology, 2023
The vortex system on the SACCON model is studied under low Reynolds number by using the flow visualization technique and the surface pressure testing measurement in a low-speed water channel and a wind tunnel, respectively.
Yu-Hsin CHEN   +3 more
doaj   +1 more source

The effect of aspect ratio on the leading-edge vortex over an insect-like flapping wing [PDF]

open access: hybridBioinspiration & Biomimetics, 2015
Insect wing shapes are diverse and a renowned source of inspiration for the new generation of autonomous flapping vehicles, yet the aerodynamic consequences of varying geometry is not well understood.
Nathan Phillips   +2 more
openalex   +2 more sources

Effects of Reynolds number on leading-edge vortex formation dynamics and stability in revolving wings

open access: yesJournal of Fluid Mechanics, 2021
The mechanisms of leading-edge vortex (LEV) formation and its stable attachment to revolving wings depend highly on Reynolds number ($\textit {Re}$).
Long Chen   +4 more
semanticscholar   +1 more source

Effect of the leading-edge vortex generator on the performance of the linear cascade [PDF]

open access: bronzeThe Physics of Fluids
In this paper, based on the airflow improvement mechanism of dragonfly wing veins, a vortex generator is designed at the leading edge of the suction surface to improve the flow condition of compressor cascades.
Wenfeng Xu   +4 more
openalex   +2 more sources

The essence of generating vortex-within-a-vortex structures behind forked caudal fins

open access: yesAIP Advances, 2022
This work focuses on vortex-within-a-vortex (VV) structures behind three different shapes of forked caudal fin with a heaving-pitching motion. The results show that the synchronization of trailing-edge vortex separation and the shedding of the leading ...
Zhongying Xiong
doaj   +1 more source

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