Ewert, Roland (2006) Broadband Slat Noise Prediction Based on CAA and Stochastic Sound Sources from a Fast Random Particle-Mesh (RPM) Method. Computers & Fluids (37), pp. 369-387. Elsevier Science.
Full text not available from this repository.
Abstract
The present paper studies the application of a low-cost CAA approach to a slat noise problem. A new fast and cheap stochastic approach is introduced to model the unsteady turbulent sound sources in the slat-cove of a high-lift airfoil. It is based on the spatial convolution of white-noise with a filter kernel and is capable to reproduce target distributions of turbulent kinetic energy and length scales, e.g., provided by a steady RANS solution to the turbulent flow problem. The computational method yields a perfectly solenoidal velocity field that resolves for homogeneous isotropic turbulence exactly the complete second-order two-point velocity correlation tensor. Results for the sound generation at the slat are given for the underlying RANS mean-flow field being based on a Menter SST turbulence model with and without Kato-Launder modification, respectively. Physical meaningful results are obtained for the acoustic characteristics of the slat-noise problem.
Item URL in elib: | https://elib.dlr.de/45113/ | ||||||
---|---|---|---|---|---|---|---|
Document Type: | Article | ||||||
Title: | Broadband Slat Noise Prediction Based on CAA and Stochastic Sound Sources from a Fast Random Particle-Mesh (RPM) Method | ||||||
Authors: |
| ||||||
Date: | 2006 | ||||||
Journal or Publication Title: | Computers & Fluids | ||||||
Refereed publication: | Yes | ||||||
Open Access: | No | ||||||
Gold Open Access: | No | ||||||
In SCOPUS: | No | ||||||
In ISI Web of Science: | Yes | ||||||
Page Range: | pp. 369-387 | ||||||
Publisher: | Elsevier Science | ||||||
Status: | Published | ||||||
Keywords: | Aeroacoustics, Turbulent Sound Sources, Particle-Mesh method, Homogeneous Isotropic Turbulence | ||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||
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: | 15 Dec 2008 | ||||||
Last Modified: | 14 Jan 2010 23:36 |
Repository Staff Only: item control page