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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, pp. 188-221. Elsevier. doi: 10.1016/j.jsv.2017.10.016. ISSN 0022-460X.

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Official URL: https://doi.org/10.1016/j.jsv.2017.10.016


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
AuthorsInstitution or Email of AuthorsAuthor's 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 ISI Web of Science:Yes
DOI :10.1016/j.jsv.2017.10.016
Page Range:pp. 188-221
EditorsEmailEditor's ORCID iD
Wilson, Alexander G.Institute of Sound and Vibration ResearchUNSPECIFIED
Series Name:Aeroacoustics research in Europe: The CEAS-ASC report on 2016 highlights
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 (old)
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:05 Nov 2020 19:24

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