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A numerical approach to trailing edge noise reduction by porous materials

Rossian, Lennart and Ewert, Roland and Delfs, Jan Werner (2018) A numerical approach to trailing edge noise reduction by porous materials. Journal of Sound and Vibration, 427. Elsevier. DOI: 10.1016/j.jsv.2017.10.016 ISSN 0022-460X

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Official URL: https://www.sciencedirect.com/science/article/pii/S0022460X1730740X

Abstract

In a two-step CFD-CAA simulation framework with DLR's CAA code PIANO enhanced by the treatment for porous materials simulations of a NACA0012 airfoil with a trailing edge made of porous materials starting at 88.75% chord length were run. The beneficial influence of porous materials was shown to be in good accordance with the experimental results. Furthermore, the effect of anisotropic as well as non-uniform materials was studied. Particularly, it was found that the application of nonuniform materials, as shown in Fig. 31, yields a notable noise reduction potential.

Item URL in elib:https://elib.dlr.de/125644/
Document Type:Article
Title:A numerical approach to trailing edge noise reduction by porous materials
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rossian, LennartLennart.Rossian (at) dlr.deUNSPECIFIED
Ewert, RolandRoland.Ewert (at) dlr.deUNSPECIFIED
Delfs, Jan WernerJan.Delfs (at) dlr.deUNSPECIFIED
Date:4 August 2018
Journal or Publication Title:Journal of Sound and Vibration
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:427
DOI :10.1016/j.jsv.2017.10.016
Editors:
EditorsEmail
Wilson, Alexander G.Institute of Sound and Vibration Research
Publisher:Elsevier
Series Name:Aeroacoustics research in Europe: The CEAS-ASC report on 2016 highlights
ISSN:0022-460X
Status:Published
Keywords:trailing edge noise reduction, porous materials for noise reduction, graded porous materials, aeroacoustics
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 for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Delfs, Prof.Dr. Jan Werner
Deposited On:07 Jan 2019 16:14
Last Modified:31 Jul 2019 20:23

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