Results 81 to 90 of about 92,283 (210)
Vortex interaction with a leading-edge of finite thickness [PDF]
Vortex interaction with a thick elliptical leading-edge at zero relative offset produces a pronounced secondary vortes of opposite sense that travels with the same phase speed as the primaty vortex along the lower surface of the edge. The edge thickness (
Rockwell, Donald, Sohn, D.
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A water tunnel flow visualization study of the vortex flow structures on the F/A-18 aircraft [PDF]
The vortex flow structures occurring on the F/A-18 aircraft at high angles of attack were studied. A water tunnel was used to gather flow visualization data on the forebody vortex and the wing leading edge extension vortex.
Ramirez, Edgar J., Sandlin, Doral R.
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Investigation of empennage buffeting [PDF]
Theoretical methods of predicting aircraft buffeting are reviewed. For the buffeting due to leading-edge vortex breakdown, a method is developed to convert test data of mean square values of fluctuating normal force to buffeting vortex strength through ...
Lan, C. Edward, Lee, I. G.
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Some recent applications of the suction analogy to vortex-lift estimates [PDF]
An extension of the suction analogy for the estimation of vortex lift along the side edge of wings is reviewed along with the concept of an augmented vortex lift to account for the effect of the leading-edge vortex passing downstream over an aft part of ...
Lamar, J. E.
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Zhileng xuebao, 2019 A serrated leading-edge blade for a multi-blade fan of an air conditioner is designed. The main objective is to reduce the vortex near the blade, thus reducing the flow loss and aerodynamic noise of the flow field of the multi-blade fan.
Jin Tingxiang +5 more
doaj +2 more sources
Experimental study of wing leading-edge devices for improved maneuver performance of a supercritical maneuvering fighter configuration [PDF]
Wind tunnel tests were conducted to examine the use of wing leading-edge devices for improved subsonic and transonic maneuver performance. These devices were tested on a fighter configuration which utilized supercritical-wing technology.
Campbell, R. L. +3 more
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Results in EngineeringThis study investigates the influence of blade pitch angle on blade loading and flow dynamics in a three-straight-bladed vertical axis wind turbine. A detailed characterization of the rotor was performed to analyze blade loads, pressure distributions ...
S. Satyam +2 more
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A theoretical investigation of the aerodynamics of low-aspect-ratio wings with partial leading-edge separation [PDF]
A numerical method is developed to predict distributed and total aerodynamic characteristics for low aspect-ratio wings with partial leading-edge separation. The flow is assumed to be steady and inviscid.
Lan, C. E., Mehrotra, S. C.
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Vortex Effects for Canard-wing Configurations at High Angles of Attack in Subsonic Flow [PDF]
A fully three-dimensional subsonic panel method that can handle arbitrary shed vortex wakes is used to compute the nonlinear forces and moments on simple canard-wing configurations. The lifting surfaces and wakes are represented by doublet panels.
Desilva, B. M. E., Medan, R. T.
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Engineering Applications of Computational Fluid MechanicsThis study investigates tip leakage vortex (TLV) characteristics in helico-axial multiphase pumps at 20% inlet gas void fraction across three flow rates (Q/Qdes = 0.9, 1.0, 1.1).
Yibo Gao +5 more
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