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Derivation of Volume Averaged Perturbation Equations for Aeroacoustics in Porous Materials

Faßmann, Benjamin W. and Delfs, Jan Werner and Ewert, Roland (2015) Derivation of Volume Averaged Perturbation Equations for Aeroacoustics in Porous Materials. Project Report. NFL - Niedersächsisches Forschungszentrum Luftfahrt.

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Abstract

The derivation of a set of volume averaged perturbation equations is presented. The new governing equations allow predicting the effect of open type porous materials on the aeroacoustics of side or trailing edges of airfoils. The numerical implementation is verified against a generic test case with homogeneous, isotropic porosity and a quiescent medium.

Item URL in elib:https://elib.dlr.de/100346/
Document Type:Monograph (Project Report)
Title:Derivation of Volume Averaged Perturbation Equations for Aeroacoustics in Porous Materials
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Faßmann, Benjamin W.benjamin.fassmann (at) dlr.deUNSPECIFIED
Delfs, Jan Wernerjan.delfs (at) dlr.deUNSPECIFIED
Ewert, Rolandroland.ewert (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:SFB 880 - Fundamentals of high-lift for future commercial aircraft, Biennial Report
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:14
Editors:
EditorsEmail
Radespiel, RolfTechnische Univiersität Braunschweig, Institut für Störmungsmechanik
Semaan, RichardTechnische Univiersität Braunschweig, Institut für Störmungsmechanik
Publisher:NFL - Niedersächsisches Forschungszentrum Luftfahrt
Series Name:Berichte aus der Luft- und Raumfahrttechnik
ISBN:978-3-92862867-9
Status:Published
Keywords:Hinterkantenschall; Porosität; Lärmreduktion; Simulation
Institution:Technische Universität Braunschweig
Department:NFL - Niedersächsisches Forschungszentrum Luftfahrt
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Faßmann, Benjamin
Deposited On:16 Dec 2015 12:22
Last Modified:31 Jul 2019 19:57

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