Results 31 to 40 of about 11,271 (298)

Leading-Edge Vortex Characteristics of Low-Aspect-Ratio Sweptback Plates at Low Reynolds Number

Applied Sciences, 2021
A sweptback angle can directly regulate a leading-edge vortex on various aerodynamic devices as well as on the wings of biological flyers, but the effect of a sweptback angle has not yet been sufficiently investigated.
Jong-Seob Han, Christian Breitsamter
doaj   +1 more source

Experimental study of the vortex system generated by a Formula 1 front wing [PDF]

, 2007
This thesis describes the research undertaken on the behaviour of the vortex system generated by a Formula 1 front wing, as it travels about a rotating wheel.
Pegrum, Jonathan Mark
core   +1 more source

Numerical Investigation of the Aerodynamic Properties of a Flying Wing Configuration [PDF]

, 2012
The numerical investigations of a generic UCAV configuration are presented. These investigations are part of the DLR internal project UCAV-2010. Compressible speed conditions are considered and presented.
Andreas Schutte, Martin Rein, Rein, Martin, Kerstin Huber, Huber, Kerstin Claudie, Schütte, Andreas   +5 more
core   +1 more source

Hovering hummingbird wing aerodynamics during the annual cycle. I. Complete wing [PDF]

Royal Society Open Science, 2017
The diverse hummingbird family (Trochilidae) has unique adaptations for nectarivory, among which is the ability to sustain hover-feeding. As hummingbirds mainly feed while hovering, it is crucial to maintain this ability throughout the annual cycle ...
Yonathan Achache, Nir Sapir, Yossef Elimelech   +2 more
doaj   +1 more source

Investigation of Tip Leakage Vortex Structure and Trajectory in a Centrifugal Pump with a New Omega Vortex Identification Method

Applied Sciences, 2022
Semi-open centrifugal pumps are widely used in various fields. However, the tip leakage vortex (TLV) has a malign effect on the impeller flow field.
Bing Qian, Yinhui Cai, Qiang Ding, Daoli Zhao, Weipeng Sun, Like Wang   +5 more
doaj   +1 more source

The leading-edge vortex and quasisteady vortex shedding on an accelerating plate [PDF]

Physics of Fluids, 2010
A computational inquiry focuses on leading-edge vortex (LEV) growth and shedding during acceleration of a two-dimensional flat plate at a fixed 10°–60° angle of attack and low Reynolds number. The plate accelerates from rest with a velocity given by a power of time ranging from 0 to 5.
Chen, Kevin K., Colonius, Tim, Taira, Kunihiko   +2 more
openaire   +2 more sources

Control of rotorcraft retreating blade stall using air-jet vortex generators [PDF]

, 2006
A series of low-speed wind tunnel tests were carried out on an oscillating airfoil fitted with two rows of air-jet vortex generators (AJVGs). The airfoil used had an RAE 9645 section and the two spanwise arrays of AJVGs were located at x/c=0.12 and 0.62.
Kokkalis, A, Khodagolian, V., Peake, D. J., Khodagolian, V, Galbraith, RAM, Roderick A. McD. Galbraith, Coton, FN, Vahik Khodagolian, Kokkalis, A., Peake, DJ, Singh, C., David J. Peake, Galbraith, R. A. M, Singh, C, Chrisminder Singh, Frank N. Coton, Coton, F.N., Anastasios Kokkalis   +17 more
core   +1 more source

Effect of Wavy Leading Edges on Airfoil Trailing-Edge Bluntness Noise

Aerospace, 2023
Among the several noise-generation mechanisms of airfoil self-noise, trailing-edge bluntness noise is an important noise source, which is caused by the vortex shedding at blunt trailing edges.
Yudi Xing, Weijie Chen, Xingyu Wang, Fan Tong, Weiyang Qiao   +4 more
doaj   +1 more source

Leading edge vortex structure of revolving model wings [PDF]

, 2010
Dye flow visualization analysis of the leading edge vortex (LEV) in hawkmoth, locust forewing and locust hindwing models reveal a dual vortex system with a minor vortex travelling along the leading edge of the wing at a zero angle relative to the leading
Cebulski, Sarah
core   +1 more source

Influence of Area Distribution Along the Span Direction on Flapping Wing Aerodynamics in Hover Based on Numerical Modeling Analysis

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This study performed a numerical investigation to explore the effect of span-wise area distribution on flapping wing aerodynamics in hovering configuration using an in-house developed flow solver.
Guilin Wu, Shuanghou Deng, Qingxi Li
doaj   +1 more source