Results 71 to 80 of about 12,206 (226)
International Journal of Turbomachinery, Propulsion and PowerThe present paper is aimed at providing an updated review of prediction methods for the aerodynamic noise of ducted rotor–stator stages. Indeed, ducted rotating-blade technologies are in continuous evolution and are increasingly used for aeronautical ...
Stéphane Moreau, Michel Roger
doaj +1 more source
A fourier pseudospectral method for some computational aeroacoustics problems
, 2006 A Fourier pseudospectral time-domain method is applied to wave propagation problems pertinent to computational aeroacoustics. The original algorithm of the Fourier pseudospectral time-domain method works for periodical problems without the interaction ...
Huang, Xun, Zhang, Xin
core +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
Aerodynamics effects of rear-mounted porous plate in cylindrical flow at different Reynold numbers
Engineering Applications of Computational Fluid MechanicsThis paper conducts simulations to analyze the flow control characteristics of cylindrical flow over porous plates in the subcritical regime, utilising large-eddy simulation (LES) coupled with the Ffowcs Williams-Hawkings (FW-H) method.
Shishang Zhang +6 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
AerospaceThe aim of the present work is the improvement of a free-wake model for the analysis of a small-scale two-bladed propeller in hover. The simulations are carried out using a BEM approach implemented in the medium-fidelity solver RAMSYS.
Manuel Iannotta +5 more
doaj +1 more source
Report on the final panel discussion on computational aeroacoustics [PDF]
Some important conclusions about future prospects for aeroacoustics in general, and for computational aeroacoustics in particular, that were reached in the course of the Final Panel Discussion of the Workshop on Computational Aeroacoustics held from 6 to
Lighthill, James
core +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
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
Comparison of Prediction Models for Sonic Boom Ground Signatures Under Realistic Flight Conditions
AerospaceThis paper presents a comparative analysis of simplified and high-fidelity sonic boom prediction methods to assess their applicability in the conceptual design of supersonic aircraft. The high-fidelity approach combines Computational Fluid Dynamics (CFD)
Jacob Jäschke +4 more
doaj +1 more source