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A synthetic wall pressure model for the efficient simulation of boundary layer induced cabin noise

Siefert, Malte and Ewert, Roland and Heintze, Olaf and Unruh, Oliver (2010) A synthetic wall pressure model for the efficient simulation of boundary layer induced cabin noise. 16th AIAA/CEAS Aeroacoustics Conference, 7.-9. Juni 2010, Stockholm, Schweden. (In Press)

Full text not available from this repository.

Abstract

This work presents a complete numerical procedure for the simulation of the vibroacoustic response of a structure to a turbulent boundary layer. As a paradigm for the sound transmission into an aircraft cabin, a generic set-up is studied that is composed out of a closed cavity which is separated from a turbulent boundary layer by an elastic flat plate. The focus is on a new stochastic model for synthesizing the instationary surface pressure fluctuations. Due to the use of a random Particle mesh method with recursive filters, this method is very efficient. The spatial-temporal pressure field is used as input in a finite element method to calculate the vibroacoustic response of the elastic plate. The sound entrainment into the cabin is simulated with the finite element method as well. Results encompass the calculation of surface pressure characteristics, acceleration spectra of the surface, and sound spectra of the closed cavity. The results are compared with experimental data taken from the EC founded project ENABLE.

Item URL in elib:https://elib.dlr.de/64517/
Document Type:Conference or Workshop Item (Paper)
Title:A synthetic wall pressure model for the efficient simulation of boundary layer induced cabin noise
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Siefert, MalteInstitute of Aerodynamics and Flow Technology, Technical Acoustics, German Aerospace Center (DLR)UNSPECIFIED
Ewert, RolandInstitute of Aerodynamics and Flow Technology, Technical Acoustics, German Aerospace Center (DLR)UNSPECIFIED
Heintze, OlafUNSPECIFIEDUNSPECIFIED
Unruh, OliverUNSPECIFIEDUNSPECIFIED
Date:June 2010
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:In Press
Keywords:Stochastic wall pressure modelling, turbulent boundary layer, sound transmission modlliung, vi-broacoustic response, cabine sound field, experimetal validation
Event Title:16th AIAA/CEAS Aeroacoustics Conference
Event Location:Stockholm, Schweden
Event Type:international Conference
Event Dates:7.-9. Juni 2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old), L - Structures & Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Ries, Doris
Deposited On:30 Jun 2010 10:41
Last Modified:30 Jun 2010 10:41

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