Results 11 to 20 of about 68,215 (317)
Bio-Inspired Aerodynamic Noise Control: A Bibliographic Review
Applied Sciences, 2019 It is well-known that many species of owl have the unique ability to fly silently, which can be attributed to their distinctive and special feather adaptations.
Yong Wang +4 more
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Nihon Kikai Gakkai ronbunshu, 2020 Noise generated from Shinkansen trains mainly consists of wheel/rail noise, bridge noise and aerodynamic noise. Generally rolling noise and structure-borne noise from a viaduct increase in proportional to the second to third power of the train speed ...
Toki UDA, Toshiki KITAGAWA
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Step-by-Step Numerical Prediction of Aerodynamic Noise Generated by High Speed Trains
Chinese Journal of Mechanical Engineering, 2022 In this paper, the unsteady flow around a high-speed train is numerically simulated by detached eddy simulation method (DES), and the far-field noise is predicted using the Ffowcs Williams-Hawkings (FW-H) acoustic model.
Tian Li +3 more
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Advances in Mechanical Engineering, 2019 When the aircraft opens the bay door to let the landing gear either drop or retract, the incoming flow will result in a significant amount of coupling noise from the bay and the landing gear.
Kun Zhao +4 more
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Design of portable multi-channel high precision acquisition system based on FPGA
Dianzi Jishu Yingyong, 2019 In order to meet the high-speed, parallel and high-precision data acquisition of the multi-point sensitive pressure sensor signals on the surface of the rotor blade, and with the functions of program-controlled gain amplification and anti-aliasing ...
Wang Wei +3 more
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Effects of Shear Layer Characteristics on Acoustic Propagation and Source Localization
Xibei Gongye Daxue Xuebao, 2019 The shear layer characteristics of an open-jet acoustic wind tunnel are of key importance on measurements of aeroacoustics. The effects of thickness, spreading angle and strength of shear layer on acoustic propagation and source localization are ...
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Aeroacoustic and aerodynamic performances of an aerofoil subjected to sinusoidal leading edges [PDF]
, 2015 This paper presents the preliminary results on the aeroacoustic and aerodynamic performances of a NACA65-(12)10 aerofoil subjected to 12 sinusoidal leading edges.
Chong, TP +5 more
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PREDICTION AND VALIDATION FOR THE AERODYNAMIC NOISE OF HIGH-SPEED TRAIN POWER CAR [PDF]
Transport Problems, 2018 The aerodynamic noise of high-speed train power car was investigated in this article. The full-scale power car was first modeled, and the external steady flow field was computed by a realizable k-ε turbulence model.
Shi-jie JIANG +3 more
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Analysis of Flow Field Structure Characteristics of Dual Impinging Jets at Different Velocities
AerospaceThe flow structure and unsteady evolution characteristics of dual impinging jets represent a flow problem of significant engineering importance in the aerospace field.
Yifan Zhao +5 more
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Aerodynamic Noise Simulation and Quadrupole Noise Problem of 600km/h High-Speed Train
IEEE Access, 2019 The quadrupole aerodynamic noise is a difficult problem in numerical simulation of the aerodynamic noise. The Kirchhoff-Ffowcs Williams and Hawkings (K-FWH) equation method and the three-dimensional compressible Large Eddy Simulation (LES) method are ...
Xiaoming Tan +4 more
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