Results 11 to 20 of about 1,929,704 (249)
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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Numerical Investigation on Aerodynamic Noise of Flow past a Cylinder with Different Spanwise Lengths
The Physics of Fluids, 2023 A numerical investigation is conducted on aerodynamic noise of flow past a circular cylinder with different spanwise lengths (0.5πD, πD, 2πD, 4πD) at Re = 10, 000, where D is the diameter of the cylinder.
Guanjiang Chen, B. Zang, M. Azarpeyvand
semanticscholar +1 more source
Journal of Applied Fluid Mechanics, 2023 The flight of the owl is silent owing to non-smooth leading edges of the owl’s wings and the curved serration of the feathers. This study applied this concept of bionics to blade design for horizontal axis wind turbines to reduce aerodynamic noise.
W. Feng +5 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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A Review of Bionic Structures in Control of Aerodynamic Noise of Centrifugal Fans
Energies, 2023 Due to the complexity of the working conditions and the diversity of application scenarios, the normal operation of a fan, whether volute tongue, volute shell surface, or blade, often encounters some unavoidable problems, such as flow separation, wear ...
Wenqiang Zhou +5 more
semanticscholar +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 +6 more
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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 +5 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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Sustainability, 2023 Heavy-duty diesel engines equipped with turbochargers is an effective way to alleviate energy shortage and reduce gas emissions, but their compressor aerodynamic noise emissions have become an important issue that needs to be addressed urgently ...
Rong Huang +4 more
semanticscholar +1 more source
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 +3 more
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