Results 41 to 50 of about 92,283 (210)

Continuous Reynolds number effect analysis of the influence of vortex generator on the aerodynamic performance of airfoil [PDF]

Journal of Hebei University of Science and Technology
In order to effectively improve the power generation efficiency of large wind turbines, studies on the optimization measures for the aerodynamic performance of wind turbine airfoils were conducted. Wind tunnel experiments were conducted to systematically
Yaya JIA, Jiacheng ZHAO, Wanpeng CAO, Qingkuan LIU, Shanning LYU   +4 more
doaj   +1 more source

Vortex-lift roll-control device [PDF]

, 1979
A wing is described for aircraft of cropped, arrow-type planform with thin leading and side edges. The wing has a pivotable tip to alter the crop angle of the wing during flight.
Lamar, J. E.
core   +1 more source

Enhancing Energy Harvesting Efficiency of Flapping Wings with Leading-Edge Magnus Effect Cylinder

Biomimetics
According to the Magnus principle, a rotating cylinder experiences a lateral force perpendicular to the incoming flow direction. This phenomenon can be harnessed to boost the lift of an airfoil by positioning a rotating cylinder at the leading edge.
Huaqiang Zhang, Bing Zhu, Weidong Chen
doaj   +1 more source

Asymmetric vortex shedding flow past an inclined flat plate at high incidence [PDF]

, 2005
This paper reports an experimental investigation of the vortex shedding wake behind a long flat plate inclined at a small angle of attack to a main flow stream.
Lam, KM, Leung, MYH
core   +1 more source

Passing-over leading-edge vortex: The thrust booster in heaving airfoil

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, Shu-Fan Zou, Yipeng Shi, J. Z. Wu   +3 more
doaj   +1 more source

A quantitative analysis of leading edge vortices in flapping wing aerodynamics

Advances in Aerodynamics
The leading edge vortex (LEV) is one of the most important lift augmentation mechanisms in flapping wing aerodynamics. We propose a methodology that aims to provide a quantitative description of the LEV.
Alejandro Gonzalo, Manuel García‑Villalba, Oscar Flores   +2 more
doaj   +1 more source

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   +1 more source

Lagrangian Vortex Dynamics in the Open Cavity Flow

Hangkong gongcheng jinzhan, 2019
The open cavity flow contains various physical phenomena relating to vortex structures. The study on the vortex dynamics in the open cavity can provide theoretical insights into flow control and noise reduction.
Han Shuaibin, Luo Yong, Zhang Shuhai
doaj   +1 more source

A method for computing the leading-edge suction in a higher-order panel method [PDF]

Experimental data show that the phenomenon of a separation induced leading edge vortex is influenced by the wing thickness and the shape of the leading edge.
Ehlers, F. E., Manro, M. E.
core   +1 more source

Falling plates with leading-edge vortex shedding

Physical Review Fluids
Final ...
Yu Jun Loo, Silas Alben
openaire   +2 more sources