Results 1 to 10 of about 11,859 (310)
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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Aerodynamic Noise Simulation of a Super-High-Rise Building Facade with Shark-Like Grooved Skin [PDF]
BiomimeticsThe wind-driven aerodynamic noise of super-high-rise building facades not only affects the experience of use inside the building but also reduces the life cycle of building facade materials to some extent.
Xueqiang Wang +2 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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Engineering Applications of Computational Fluid Mechanics, 2023 It is noteworthy to explore potential measures for further reducing the aerodynamic drag and noise of high-speed pantographs. This paper proposes a method of introducing spanwise waviness into the upper and lower arms.
Deng Qin, Tian Li, Jiye Zhang, Ning Zhou
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Applied Sciences, 2019 The high-speed-train pantograph is a complex structure that consists of different rod-shaped and rectangular surfaces. Flow phenomena around the pantograph are complicated and can cause a large proportion of aerodynamic noise, which is one of the main ...
Yongfang Yao +4 more
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Analysis and Evaluation of Aerodynamic Noise Characteristics of Toroidal Propeller
DronesToroidal propellers, a new type of drone propellers capable of significantly reducing noise, offer new possibilities for future low-altitude flying platforms.
Wei Wei +5 more
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Rod–Airfoil Interaction Noise Reduction Using Gradient Distributed Porous Leading Edges
Applied Sciences, 2022 Rod–airfoil interaction noise is a major concern in several practical industrial and aeronautical applications. In this study, we constructed bio-inspired gradient distributed porous leading edges to reduce rod–airfoil interaction noise. Noise radiations
Yong Wang +4 more
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Comparative study of surface integral methods in aeroacoustic prediction
Frontiers in Physics, 2023 Introduction: Surface integral methods based on the acoustic analogy and Kirchhoff formulation are widely employed in computational aeroacoustics. The computational accuracy is usually highly dependent on the selections of the acoustic prediction method ...
Chen Xu +5 more
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Effect of offset distances for rod-airfoil interaction noise
Frontiers in Physics, 2023 The noise generated by the interaction between the wake of rods and airfoils is a universal phenomenon in the engineering field. The noise generation mechanism is mainly caused by the violent changes of the pulsating pressure on the airfoil surface ...
Shujie Jiang +6 more
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Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures [PDF]
Journal of Applied Fluid Mechanics, 2022 It is well known that the pantograph, which works as a complex component of high-speed trains, is an important source of aerodynamic drag and aerodynamic noise of a high-speed train (HST) that can affect HST performance, comfort for passengers, and ...
Y. Yao +5 more
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