Results 11 to 20 of about 92,283 (210)
Manipulation of Leading-Edge Vortex Flow [PDF]
Aerospace, 2020 At very high angles of attack, the leading-edge vortex of a semi-slender delta wing becomes unsteady and collapses, endangering the flight stability. Active flow control by pulsed blowing stabilizes the vortex system, enlarging the flight envelope for such wing configurations.
Andrei Buzica, Christian Breitsamter
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Applied Sciences, 2022 The performance and efficiency of a centrifugal compressor are usually affected by the highly complex 3-dimensional flow structures which develop in the flow field of the compressor.
Seongbin Hong +2 more
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Pulsed Blowing Interacting with a Leading-Edge Vortex
Aerospace, 2020 Manipulation of vortex instabilities for aerodynamic performance increase is of great interest in numerous aeronautical applications. With increasing angle of attack, the leading-edge vortex of a semi-slender delta wing becomes unsteady and eventually ...
Andrei Buzica, Christian Breitsamter
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A Rotary Wing System for Micro Air Vehicle Applications. Part 1 [PDF]
INCAS Bulletin, 2011 The goal of the paper is to propose a new type of ornithopter that avoids the mechanical difficulties of a flapping system. It uses a modified design of a cycloidal propulsor.
Valentin BUTOESCU
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Frontiers in Energy Research, 2022 A hydrofoil is a fundamental structure in fluid machinery, and it is widely applied to the fields of propellers, blades of axial flow pumps and underwater machinery.
Hao Yan +4 more
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Numerical Investigation of a Dynamic Stall on a Single Rotating Blade
Aerospace, 2021 Dynamic stall is a phenomenon on the retreating blade of a helicopter which can lead to excessive control loads. In order to understand dynamic stall and fill the gap between the investigations on pitching wings and full helicopter rotor blades, a ...
Yin Ruan, Manfred Hajek
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Effect of leading-edge tubercles on the flow over low-aspect-ratio wings at low Reynolds number
Theoretical and Applied Mechanics Letters, 2023 Two-dimensional time-resolved particle image velocimetry (TR-PIV) and stereographic particle image velocimetry (SPIV) techniques were used to investigate the effect of leading-edge tubercles on the flow over low-aspect-ratio wing models.
Pengxin Yang, Yichen Zhu, Jinjun Wang
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Numerical Studies on the Effect of Leading Edge Tubercles on a Low-Pressure Turbine Cascade
Energies, 2023 The influence of the bionic leading edge tubercles on the aerodynamic performance of a high-speed low-pressure turbine has been numerically studied. Nine different tubercle configurations were designed to reduce the loss of the cascade at high Mach and ...
Wenhua Duan +3 more
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Leading-edge vortex dynamics on plunging airfoils and wings [PDF]
Journal of Fluid Mechanics, 2022 The vortex dynamics of leading-edge vortices on plunging high-aspect-ratio (AR = 10) wings and airfoils were investigated by means of volumetric velocity measurements, numerical simulations and stability analysis to understand the deformation of the leading-edge vortex filament and spanwise instabilities.
O. Son +5 more
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Leading-Edge Vortex Lift (LEVL) Sample Probe for Venusian Atmosphere
Aerospace, 2022 Can a small, lightweight, free-falling sample probe be slowed enough in the Venusian atmosphere to run a 10 min microelectromechanical systems (MEMS) ion gas micro spectrometer, without adding a propulsion systems or explosives and parachutes to the ...
Christopher Isaac, Nick Jones
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