Results 51 to 60 of about 8,352,814 (137)
Aerodynamic Shape Optimisation of a Camber Morphing Airfoil and Noise Estimation
Aerospace, 2022 In order to decrease the emitted airframe noise by a two-dimensional high-lift configuration during take-off and landing performance, a morphing airfoil has been designed through a shape design optimisation procedure starting from a baseline airfoil (NLR
Robert Valldosera Martinez +2 more
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Aeroacoustic and Performance Simulations of a Test Scale Open Rotor [PDF]
, 2013 This paper explores a comparison between experimental data and numerical simulations of the historical baseline F31/A31 open rotor geometry. The experimental data were obtained at the NASA Glenn Research Center s Aeroacoustic facility and include ...
Claus, Russell W.
core
Experimental and Computational Aeroacoustic Investigation of Small Rotor Interactions in Hover
Applied Sciences, 2021 This paper investigates the aeroacoustic interactions of small hovering rotors, using both experiments and computations. The experiments were conducted in an anechoic chamber with arrays of microphones setup to evaluate the azimuthal and polar ...
Austin David Thai +6 more
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Aeroacoustic and Performance Simulations of a Test Scale Open Rotor [PDF]
48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2012 This paper explores a comparison between experimental data and numerical simulations of the historical baseline F31/A31 open rotor geometry. The experimental data were obtained at the NASA Glenn Research Center s Aeroacoustic facility and include performance and noise information for a variety of flow speeds (matching take-off and cruise).
openaire +1 more source
Wall-modeled large-eddy simulation of a trailing-edge serration–finlet configuration
AIP Advances, 2021 This paper proposes a novel trailing-edge treatment to reduce airfoil self-noise: a serration–finlet configuration. According to the current literature, while serrations are good at reducing low-frequency noise, finlets are able to significantly reduce ...
Yuejun Shi, Wolfgang Kollmann
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An experimental study on investigation of noise and thrust performance for modified propellers
European Mechanical ScienceThis study investigates the aerodynamic and aeroacoustic effects of biomimetic-inspired trailing-edge modifications on propeller performance. A half-hexagon serration model was applied to the trailing edge of a propeller, and a series of experimental ...
Alper Burgaç
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Measurement + Control, 2019 This work presents an experimental study to investigate the influence of step volute tongue on aerodynamic performance and aeroacoustic behavior of a forward-curved fan.
Hui Yang +7 more
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A Parametric study on the effects of winglet cant angle on wing aerodynamics and aeroacoustics
Scientific ReportsThe use of winglet devices is an efficient technique for enhancing aerodynamic performance. This study investigates the effects of winglet cant angles on both the aerodynamics and aeroacoustics of a commercial wing, comparing them to other significant ...
Erfan Vaezi +2 more
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Kongqi donglixue xuebaoWith the increasing demand for low noise and high efficiency in civil aviation, the integrated aerodynamic and aeroacoustic design of typical high-lift devices has become particularly crucial, while most existing studies primarily focus on either ...
Chengqi Liu +3 more
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Optimization Design and Experimental Study of Low-Pressure Axial Fan with Forward-Skewed Blades
International Journal of Rotating Machinery, 2007 This paper presents an experimental study of the optimization of blade skew in low pressure axial fan. Using back propagation (BP) neural network and genetic algorithm (GA), the optimization was performed for a radial blade.
Li Yang, Ouyang Hua, Du Zhao-Hui
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