Results 41 to 50 of about 11,915 (202)
Noise radiated by an open cavity at low Mach number: Effect of the cavity oscillation mode [PDF]
, 2019 The present work focuses on the study of noise generation and radiation of an infinite open three-dimensional cavity at low Mach number with laminar upstream conditions that is of interest to understand noise generation mechanisms in wall-bounded ...
Duben, Alexey +4 more
core +2 more sources
Engineering Reports, Volume 8, Issue 1, January 2026.Experimental measurements reveal distinct performance boundaries: TMM achieves rapid convergence (< 2 dB error below 2000 Hz) but neglects 3D wave effects; FEA maintains < 10% deviation up to 3500 Hz with 90% reduced computational cost versus CFD; while transient CFD captures broadband attenuation trends despite 10× higher resource demands.
Bin Fang, Tong Wei, Yi Yang, Xintie Wang
wiley +1 more source
The radiating part of circular sources [PDF]
, 2010 An analysis is developed linking the form of the sound field from a circular source to the radial structure of the source, without recourse to far-field or other approximations.
Carley M. +9 more
core +3 more sources
Wind Energy, Volume 28, Issue 8, August 2025.ABSTRACT We develop a torque‐pitch control framework using deep reinforcement learning for wind turbines to optimize the generation of wind turbine energy while minimizing operational noise. We employ a double deep Q‐learning, coupled to a blade element momentum solver, to enable precise control over wind turbine parameters.
Martín Frutos +3 more
wiley +1 more source
A weak-scattering model for turbine-tone haystacking outside the cone of silence
, 2011 We consider the scattering of sound by turbulence in a jet shear layer. The turbulent, time-varying inhomogeneities in the flow scatter tonal sound fields in such a way as to give spectral broadening, which decreases the level of the incident tone, but ...
McAlpine, A., Powles, C.J., Tester, B.J.
core +1 more source
State of the Art of Low‐Frequency Acoustic Modulation: Intensity Enhancement and Directional Control
Advanced Science, Volume 12, Issue 27, July 17, 2025.High intensity low‐frequency sound sources hold significant value in many fields. However, their long wavelength, strong penetrability, and tendency to diffract make direction control and intensity enhancement challenging. Acoustic generators and metamaterial‐based acoustic devices still face issues such as low energy efficiency, poor directional ...
Jingsong Xu +13 more
wiley +1 more source
Acta AcusticaModeling fluid-structure-acoustic interaction is a highly challenging task and currently there is a lack of available benchmark datasets. For instance, to understand the processes of human phonation, it is essential to fully understand the fluid ...
Schoder Stefan +5 more
doaj +1 more source
Wind Energy, Volume 28, Issue 7, July 2025.ABSTRACT As the demand for power increases, installing small‐scale wind turbines can be an alternative solution. However, the main challenge for their implementation is the aerodynamic noise. With a view to minimizing noise, this study focuses on the performance investigation of a small‐scale horizontal‐axis wind turbine with NACA 4412 blades inspired ...
Hasan Muhommod Robin +4 more
wiley +1 more source
Acoustic Assessment of Twin-engined Turboprop Layout [PDF]
, 2018 No abstract ...
Barakos, George N. +2 more
core
Microcylinder and Slot Combination for Flow Separation Control Over a Wind Turbine Airfoil
Wind Energy, Volume 28, Issue 7, July 2025.ABSTRACT This study explores a novel passive flow control strategy combining a microcylinder and slot configuration to mitigate flow separation over an S809 wind turbine airfoil under stall conditions at a Reynolds number of 106. Numerical simulations are conducted using the Reynolds‐averaged Navier–Stokes (RANS) approach. The primary objectives are to
Sami Bouterra +3 more
wiley +1 more source