Results 81 to 90 of about 21,854 (248)
Computational aeroacoustics to identify sound sources in the generation of sibilant /s/
International Journal for Numerical Methods in Biomedical Engineering, 2018 A sibilant fricative /s/ is generated when the turbulent jet in the narrow channel between the tongue blade and the hard palate is deflected downwards through the space between the upper and lower incisors and then impinges the space between the lower ...
A. Pont +4 more
semanticscholar +1 more source
Wind Energy, Volume 28, Issue 3, March 2025.ABSTRACT The airfoil DU91‐W2‐150 was investigated in the Low Speed Low Turbulence Tunnel at the Delft University of Technology to study unsteady aerodynamics. This experimental study tested the airfoil under a wide range of angles of attack (AoA) from 0° to 310° at three Reynolds numbers (Re$$ \mathit{\operatorname{Re}} $$) from 2×105$$ 2\times 1{0}^5 $
Guanqun Xu +3 more
wiley +1 more source
Applied SciencesRod–airfoil configurations are commonly used to study turbulence–structure interaction noise, which is a major contributor to aerodynamic noise in various engineering applications.
Mehmet Numan Kaya +3 more
doaj +1 more source
Advances in Astronomy, Volume 2025, Issue 1, 2025.Infrasound, low‐frequency sound below 20 Hz, has been a key technology to monitor explosion events in the atmosphere. The International Monitoring System (IMS) of the Comprehensive Nuclear‐Test‐Ban Treaty Organization provides the means for continuous monitoring of infrasonic events worldwide.
Keehoon Kim, Elizabeth A. Silber
wiley +1 more source
Experimental Investigation of Rotor Noise in Reverse Non-Axial Inflow
AerospaceThis paper experimentally characterises the far-field noise emissions of a rotor operating in reverse non-axial inflow conditions. Specifically, experiments were undertaken at a range of rotor tilting angles and inflow velocities to investigate the ...
Liam Hanson +3 more
doaj +1 more source
Engineering Reports, Volume 6, Issue 11, November 2024.This study investigates the impact of a redesigned aerodynamics laboratory course on students' readiness for Aerospace Engineering senior design projects at North Carolina State University. The updated curriculum, centered on propellers and incorporating Additive Manufacturing, introduces anechoic chambers for the first time.
Mingtai Chen
wiley +1 more source
FluidsIn aerospace, flow control techniques have improved the separation flow characteristics around airfoils by various means. In this paper, the delayed detached eddy simulation (DDES) technique is used to simulate the detailed flow field around the NACA0021
Zelin Liu, Kaidi Li, Xiaojing Sun
doaj +1 more source
Sound Synthesis of Objects Swinging through Air Using Physical Models
Applied Sciences, 2017 A real-time physically-derived sound synthesis model is presented that replicates the sounds generated as an object swings through the air. Equations obtained from fluid dynamics are used to determine the sounds generated while exposing practical ...
Rod Selfridge +2 more
doaj +1 more source
The aeroacoustics of finite wall-mounted square cylinders
Journal of Fluid Mechanics, 2017 This paper presents the results of an experimental study that relates the flow structures in the wake of a square finite wall-mounted cylinder with the radiated noise. Acoustic and hot-wire measurements were taken in an anechoic wind tunnel. The cylinder
R. Porteous, D. Moreau, C. Doolan
semanticscholar +1 more source
Acoustic Propagation in the Near‐Surface Martian Atmosphere
Journal of Geophysical Research: Planets, Volume 129, Issue 7, July 2024.Abstract This work introduces a comprehensive model of sound propagation on Mars, in light of the recent operation of several microphones on the Martian surface. The main outcome of this work is an operational acoustic model capable of simulating the sound field created by any source, at any location on the Martian surface, at any time.
Martin Gillier +7 more
wiley +1 more source