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Aerodynamic Noise Simulation of a Super-High-Rise Building Facade with Shark-Like Grooved Skin [PDF]

Biomimetics
The 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, Guangcai Wen, Yangyang Wei   +2 more
doaj   +2 more sources

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, Fan Tong, Zhengwu Chen, Chao Wang, Shujie Jiang   +4 more
doaj   +1 more source

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, Shihao Wang, Dangguo Yang, Rongping Zhang, Shujie Jiang, Yijun Mao   +5 more
doaj   +1 more source

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, Lanqing Li, Xiaokun Guo, Xiaokun Guo, Weiming Zhao, Rongping Zhang, Chao Wang   +6 more
doaj   +1 more source

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, Z. Sun, G. Li, P. Prapamonthon, G. Cheng, G. Yang   +5 more
doaj   +1 more source

A Numerical Study of the Wind Speed Effect on the Flow and Acoustic Characteristics of the Minor Cavity Structures in a Two-Wheel Landing Gear

Applied Sciences, 2021
The landing gear is widely concerned as the main noise source of airframe noise. The flow characteristics and aerodynamic noise characteristics of the landing gear were numerically simulated based on Large Eddy Simulation and Linearized Euler Equation ...
Longlong Huang, Kun Zhao, Junbiao Liang, Victor Kopiev, Ivan Belyaev, Tian Zhang   +5 more
doaj   +1 more source

Numerical study on the aerodynamic performance of the three-dimensional wing of a jellyfish-like flyer

Frontiers in Physics, 2023
The jellyfish-like flying machine is a new development direction of the future bionic flapping-wing aircraft besides the insect-mimic and bird-mimic micro air vehicles (MAVs).
Xueguang Meng, Chengjian Deng, Dingsheng Wang, Shujie Jiang   +3 more
doaj   +1 more source

Numerical and Experimental Study on Mode Identification Error Characteristics of Fan Noise

Frontiers in Energy Research, 2022
The influence of different test methods on the accuracy of mode identification is not clear, and it is necessary to explore the error transfer characteristics in mode decomposition of fan noise. Numerical and experimental research studies are carried out
Kunbo Xu, Cunliang Liu, Fan Tong, Weiyang Qiao   +3 more
doaj   +1 more source

Numerical and Experimental Investigations of Modal Coherence Characteristics for the Determination of Broadband Noise in Flow Ducts

Frontiers in Energy Research, 2022
This paper presents a detailed investigation about the modal coherence characteristics of turbomachinery noise. The modal coherence characteristics of ducted noise at high frequencies are investigated by establishing three kinds of ducted sound source ...
Kunbo Xu, Cunliang Liu, Fan Tong, Weiyang Qiao   +3 more
doaj   +1 more source

Study on Interior Aerodynamic Noise Characteristics of the High-Speed Maglev Train in the Low Vacuum Tube

Applied Sciences, 2022
As the next-generation high-speed transportation system, the low vacuum tube high-speed maglev system combines the tube with a certain degree of vacuum with the high-speed maglev train, which can realize high-speed operation under low aerodynamic ...
Jiali Liu, Mengge Yu, Dawei Chen, Zhigang Yang   +3 more
doaj   +1 more source