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Study on a Generic Nonlocally Reacting Liner

Busse-Gerstengarbe, St. and Nitsch, St. and Bake, Friedrich and Enghardt, Lars (2014) Study on a Generic Nonlocally Reacting Liner. AIAA Journal. American Institute of Aeronautics and Astronautics (AIAA). DOI: http://arc.aiaa.org/doi/abs/10.2514/1.J053021 ISSN 0001-1452

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/1.J053021

Abstract

For many applications (e.g., in aircraft engines), the cells of Helmholtz resonator liners are not solely locally reacting because drainage slots are cut into the side walls. However, for the design of liners, the resulting effects of such drainage slots are currently not taken into account. Therefore, this paper presents a study on the effects of liner-cell interaction. In the first part, experimental results for different slot configurations of a generic test object (the scaled liner cavity) are shown and discussed. The major result is an additional dissipation maximum caused by the cell interaction. Based on these findings, an empirical relation is derived incorporating geometrical parameters like the percentage open area ratio to predict the appearance of the additional maximum.

Item URL in elib:https://elib.dlr.de/91108/
Document Type:Article
Title:Study on a Generic Nonlocally Reacting Liner
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Busse-Gerstengarbe, St.Institut für Strömungsmechanik und Technische Akustik, Technische Universität BerlinUNSPECIFIED
Nitsch, St.Institut für Strömungsmechanik und Technische Akustik, Technische Universität BerlinUNSPECIFIED
Bake, FriedrichDLR, AT-TRAUNSPECIFIED
Enghardt, LarsDLR, AT-TRAUNSPECIFIED
Date:2014
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :http://arc.aiaa.org/doi/abs/10.2514/1.J053021
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0001-1452
Status:Published
Keywords:Liner, non-locally reacting, aero-engine, noise reduction, drainage
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies, L - Combusion Chamber Technologies (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Propulsion Technology > Engine Acoustic
Deposited By: Bake, Dr.-Ing. Friedrich
Deposited On:20 Oct 2014 08:37
Last Modified:08 Mar 2018 18:42

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