Results 101 to 110 of about 1,929,704 (249)
Aerodynamic noise characteristics of airfoils with morphed trailing edges
International Journal of Heat and Fluid Flow, 2022 Hasan Kamliya Jawahar +2 more
semanticscholar +1 more source
Comparison of aerodynamic noise from three nose-cylinder combinations [PDF]
, 1970 Results of experiments with three different cylinder and blunted nose combinations are discussed. Combinations include smooth cylinder with single 15 deg cone, smooth cylinder with double cone of 25 and 10 deg, and longitudinally corrugated cylinder with
Guenther, R. A., Reding, M. P.
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Applied SciencesTime series prediction of aerodynamic noise is critical for oscillatory instabilities analyses in fluid systems. Due to the significant dynamical and non-stationary characteristics of aerodynamic noise, it is challenging to precisely predict its temporal
Zhoufanxing Lei +4 more
doaj +1 more source
Mean velocity, turbulence intensity, and scale in a subsonic turbulent jet impinging normal to a large flat plate [PDF]
To explain the increase in noise when a jet impinges on a large flat plate, mean velocity, turbulence intensity, and scale were measured at nominal nozzle-exit velocities of 61, 138, and 192 meters per second with the plate located 7.1 nozzle-exit ...
Boldman, D. R., Brinich, P. F.
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Performance and benefits of an advanced technology supersonic cruise aircraft [PDF]
The results of four years research on technology are synthesized in an advanced supersonic cruise aircraft design. Comparisons are presented with the former United States SST and the British-French Concorde, including aerodynamic efficiency, propulsion ...
Fitzsimmons, R. D.
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Sonic inlet noise attenuation and performance with a J-85 turbojet engine as a noise source [PDF]
A static test program was conducted to investigate aerodynamic and acoustic performance of a sonic inlet used as a noise suppressor. A translating centerbody type inlet with radial vanes was tested ahead of a J85-GE-13 turbojet engine.
Groth, H. W.
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Forward acoustic performance of a model turbofan designed for a high specific flow (QF-14) [PDF]
Forward noise and overall aerodynamic performance are presented for a high-tip-speed fan having an exceptionally high average axial Mach number at the rotor inlet.
Lucas, J. G. +2 more
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Analysis of the Aerodynamic Noise of an Automotive HVAC System
Zhileng xuebao, 2019 Automotive heating, ventilating, and air-conditioning (HVAC) noise is the primary noise source in an automotive air-conditioning system and mainly manifests as aerodynamic noise.
Wang Linan +3 more
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Noise generated by quiet engine fans. 3: Fan C [PDF]
A family of fans designed with low noise features was acoustically evaluated, and noise results are documented for a 1.6-pressure-ratio, 472-m/sec (155-ft/sec) tip speed fan. The fan is described and some aerodynamic operating data are given.
Montegan, F. J. +2 more
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Numerical Simulation of Aerodynamic Noise Generated by Large Wind Blade Airfoil
Kongzhi Yu Xinxi Jishu, 2017 Aiming to reduce aerodynamic noise of wind blade, a method of coupling CFD/CAA was used to simulate the aerodynamic noise of wind blade airfoil. In this paper, surface pressure distribution of airfoil was obtained by using STAR-CCM+ and the near sound ...
LI Dongxu +5 more
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