Results 71 to 80 of about 21,854 (248)
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
Aerospace, 2016 The interaction of a plane acoustic wave and a sheared flow is numerically investigated for simple orifice and perforated plate configurations in an isolated, non-resonant environment for Mach numbers up to choked conditions in the holes.
Moritz Schulze +2 more
doaj +1 more source
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
Measurement of aerodynamic and acoustic quantities describing flow around a body placed in a wind tunnel [PDF]
, 2019 Aerodynamically generated noise affects passenger comfort in cars, high-speed trains, and airplanes, and thus, automobile manufacturers aim for its reduction.
Dobeš, Josef +2 more
core +1 more source
Continuous Adjoint to Proudman's Formula for Aeroacoustic Shape Optimization
International Journal for Numerical Methods in Fluids, Volume 97, Issue 6, Page 966-984, June 2025.This paper presents a cost‐efficient framework for aeroacoustic shape optimization by developing the adjoint to Proudman's formula, coupled with the steady‐state RANS equations and the k‐ ω$$ \omega $$ SST turbulence model. The aeroacoustic model and the adjoint solver are initially validated/verified with experimental data/finite differences, before ...
M. Erfan Farhikhteh +2 more
wiley +1 more source
Development and validity of type II sulcus vocalis in excised canine larynx
World Journal of Otorhinolaryngology - Head and Neck Surgery, Volume 11, Issue 2, Page 276-280, June 2025.Abstract Objectives This study aims to develop a sulcus vocalis model in the excised canine larynx and to investigate the validity of the model. Methods Type II sulcus vocalis was created by continuous intradermal suture in six excised canine larynges.
Ting Gong +6 more
wiley +1 more source
Spatiotemporal optical vortex reconnections of loop vortices
Nanophotonics, Volume 14, Issue 6, Page 729-739, April 2025.Abstract Reconnections of spatiotemporal optical vortices have been shown to occur between line vortices. Here, we show that reconnections also occur between spatiotemporal loop vortices in optical waves. As optical loop vortices propagate in a media with spatial diffraction and material group velocity dispersion, unique reconnections occur.
Jordan Adams, Andy Chong
wiley +1 more source
Tonal-Noise Assessment of Quadrotor-Type UAV Using Source-Mode Expansions
Acoustics, 2020 The present work deals with the modeling of the aerodynamic sound generated by the propellers of small-size drones, taking into account the effects of horizontal forward flight with negative pitch and of installation on supporting struts.
Michel Roger, Stéphane Moreau
doaj +1 more source
An integral formulation for wave propagation on weakly non-uniform potential flows
, 2016 An integral formulation for acoustic radiation in moving flows is presented. It is based on a potential formulation for acoustic radiation on weakly non-uniform subsonic mean flows.
Astley, R. Jeremy +4 more
core +3 more sources
ADER-WENO Finite Volume Schemes with Space-Time Adaptive Mesh Refinement [PDF]
, 2015 We present the first high order one-step ADER-WENO finite volume scheme with Adaptive Mesh Refinement (AMR) in multiple space dimensions. High order spatial accuracy is obtained through a WENO reconstruction, while a high order one-step time ...
Balsara, Dinshaw S. +3 more
core +1 more source