DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Sound Generation by Low Mach Number Flow Through Pipes with Diaphragm Orifices

Obermeier, Frank and Konstantinov, Mikhail and Shishkin, Andrei and Wagner, Claus (2014) Sound Generation by Low Mach Number Flow Through Pipes with Diaphragm Orifices. In: New Results in Numerical and Experimental Fluid Mechanics IX Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 124. Springer Verlag, Cham Heidelberg New York Dordrecht London. pp. 629-637. ISBN 978-3-319-03157-6. ISSN 1612-2909.

Full text not available from this repository.

Official URL: http://link.springer.com/chapter/10.1007/978-3-319-03158-3_64


Aerodynamic noise generated by low Mach number flow through a pipe with two differently sized diaphragm orifices is investigated both theoreti-cally as well as numerically. Such a flow may be considered as a simple model of an aircraft climate control system. The theory is based on an acoustic analogy introduced by Möhring and Ober-meier in the seventies. They identified by means of the so-called Green`s vector function acoustic sources in unsteady flows as the unsteady motion of vorticity “vortices are the voice of flows”. In addition, the unsteady flow through the pipe, the aerodynamic sources, and the spectra of sound are evaluated numerically. Here effects of different numerical algorithms (PISO – PIMPLE) and of different numerical boundary condi-tions at the outlet of the pipe (advective, convective – wave transmissive) are identified and discussed.

Item URL in elib:https://elib.dlr.de/88421/
Document Type:Contribution to a Collection
Additional Information:Online ISBN978-3-319-03158-3; DOI:10.1007/978-3-319-03158-3_64, ISSN 1860-0824 (electronic), Library of Congress Control Number: 2013957123
Title:Sound Generation by Low Mach Number Flow Through Pipes with Diaphragm Orifices
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Obermeier, FrankIns. f. Meschanik u. Fluiddynamik TU Bergakademie FreibergUNSPECIFIED
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics IX
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 629-637
EditorsEmailEditor's ORCID iD
Dillmann, AndreasDeutsches Zentrum für Luft- undUNSPECIFIED
Heller, GerdAirbus Deutschland, BremenUNSPECIFIED
Krämer, EwaldUniversity of StuttgartUNSPECIFIED
Krepiln, Hans-PeterDeutsches Zentrum für Luft- undUNSPECIFIED
Nitsche, WolfgangTU BerlinUNSPECIFIED
Rist, UlrichUniversity of StuttgartUNSPECIFIED
Publisher:Springer Verlag, Cham Heidelberg New York Dordrecht London
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Keywords:Aero-acoustic sound generation, pipe flow, theory, numerical flow simulation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Project Next Generation Train II (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Micknaus, Ilka
Deposited On:18 Mar 2014 18:11
Last Modified:18 Mar 2014 18:11

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.