Ewert, Roland and Dierke, Jürgen and Siebert, Jona and Neifeld, Andrej and Appel, Christina and Siefert, Malte and Kornow, Oliver (2011) CAA broadband noise prediction for aeroacoustic design. Journal of Sound and Vibration (330), pp. 4139-4160. Elsevier. doi: 10.1016/j.jsv.2011.04.014. ISSN 0022-460X.
Full text not available from this repository.
Official URL: http://www.journals.elsevier.com/journal-of-sound-and-vibration/
Abstract
The current status of a Computational Aeroacoustics (CAA) approach to simulate broadband noise is reviewed. The method rests on the use of steady Reynolds Averaged Navier-Stokes (RANS) simulation to describe the time-averaged motion of turbulent flow. By means of synthetic turbulence the steady one-point statistics (e.g. turbulence kinetic energy) and turbulent length- and time-scales of RANS are translated into fluctuations having statistics that very accurately reproduce the initial RANS target-setting. The synthetic fluctuations are used to prescribe sound sources which drive linear perturbation equations. The whole approach represents a methodology to solve statistical noise theory with state-of-the-art CAA tools in the time-domain. A brief overview of the synthetic turbulence model and its numerical discretization in terms of the Random Particle-Mesh (RPM) and Fast Random Particle-Mesh (FRPM) method is given. Results are presented for trailing-edge noise, slat noise, and jet noise. Some problems related to the formulation of vortex sound sources are discussed.
Item URL in elib: | https://elib.dlr.de/73677/ | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Article | ||||||||||||||||||||||||
Title: | CAA broadband noise prediction for aeroacoustic design | ||||||||||||||||||||||||
Authors: |
| ||||||||||||||||||||||||
Date: | 12 May 2011 | ||||||||||||||||||||||||
Journal or Publication Title: | Journal of Sound and Vibration | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
DOI : | 10.1016/j.jsv.2011.04.014 | ||||||||||||||||||||||||
Page Range: | pp. 4139-4160 | ||||||||||||||||||||||||
Publisher: | Elsevier | ||||||||||||||||||||||||
ISSN: | 0022-460X | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | CAA, Random Particle Mesh method, airframe noise, slat noise, trailing edge noise, jet noise | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||||||
HGF - Program Themes: | L VU - Air Traffic and Environment (old) | ||||||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||||||
DLR - Program: | L VU - Air Traffic and Environment | ||||||||||||||||||||||||
DLR - Research theme (Project): | L - Quiet Air Traffic (old) | ||||||||||||||||||||||||
Location: | Braunschweig | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Technical Acoustics | ||||||||||||||||||||||||
Deposited By: | Ewert, Dr.-Ing. Roland | ||||||||||||||||||||||||
Deposited On: | 04 Dec 2012 14:47 | ||||||||||||||||||||||||
Last Modified: | 13 Mar 2015 11:18 |
Repository Staff Only: item control page