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Experimental techniques for duct acoustics

Bake, Friedrich (2019) Experimental techniques for duct acoustics. LAUM Mat&Flow Winter School 2019, 02.-04.12.2019, Le Mans, France.

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Official URL: https://matflow2019.sciencesconf.org/

Abstract

Overview: • Duct acoustics in general: o Acoustic wave equation o Three-dimensional waves o Plane waves o Attenuation of sound in ducts • Experimental methods and analysis: o Plane wave decomposition o Reflection and transmission coefficients o Dissipation coefficient o DUct Acoustics Testrig (DUCT) Circular (DUCT-C) Rectangular (DUCT-R) o Hot Acoustic Testrig (HAT) • Liner types: o SDOF liner (Helmholtzresonator, Lambda/4) o DDOF o Bias Flow Liner o Novel liner concepts: Zero-Massflow-Liner (ZML) Flexible Structure liner (FlexiS)

Item URL in elib:https://elib.dlr.de/132888/
Document Type:Conference or Workshop Item (Lecture)
Title:Experimental techniques for duct acoustics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bake, FriedrichFriedrich.Bake (at) dlr.dehttps://orcid.org/0000-0002-3235-428X
Date:3 December 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Duct Acoustics, Liner, Experimental Methods, Damping
Event Title:LAUM Mat&Flow Winter School 2019
Event Location:Le Mans, France
Event Type:Workshop
Event Dates:02.-04.12.2019
Organizer:LAUM, University of Le Mans, UMR CNRS
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
Location: Berlin-Charlottenburg
Institutes and Institutions:Institute of Propulsion Technology > Engine Acoustic
Deposited By: Bake, Dr.-Ing. Friedrich
Deposited On:07 Jan 2020 09:38
Last Modified:07 Jan 2020 09:38

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