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SIDLAB: New 1D sound propagation simulation software for complex duct networks
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Flow acoustics.ORCID iD: 0000-0001-7898-8643
2006 (English)In: 13th International Congress on Sound and Vibration 2006, 2006, 4262-4269 p.Conference paper (Refereed)
Abstract [en]

Low frequency sound generation and propagation in duct and pipe systems is important in many applications. The examples range from ventilation systems to IC-engine exhaust and inlet systems. Plane wave two-port theory can be used to describe the sound transmission along the system. Based on a long experience of different applications, a new user-friendly software (SIDLAB) has been developed to meet today's engineering needs. The new software is MATLAB based and allows access to the source code. This gives the user a flexibility to do other calculations than those already defined and further post-process the data. SIDLAB includes typical two-port elements for many applications but also unique elements, e.g., for modelling devices for exhaust gas cleaning. It is also unique that the two-port elements are allowed to be active, i.e., contain sources. There is no limitation to the number of elements and they can be connected together in any arbitrary scheme. By introducing one-port elements, the network can handle several inlets and outlets. SIDLAB can simulate passive results, such as transmission loss and transfer matrices between arbitrary nodes (points) in the network. It can also simulate active results, such as pressure and sound power at each node in the network. In this paper an overview of the new software is presented together with an example of the analysis of a complex muffler.

Place, publisher, year, edition, pages
2006. 4262-4269 p.
, 13th International Congress on Sound and Vibration 2006, ICSV 2006, 5
Keyword [en]
Low-frequency sounds, Sound propagation, Sound transmission, Source codes, Transfer matrixes, Transmission loss, Unique element, Ventilation systems, Application programs, Architectural acoustics, Complex networks, Computer simulation, Ducts, Exhaust systems (engine), Transfer matrix method, Ventilation, MATLAB
National Category
Fluid Mechanics and Acoustics
URN: urn:nbn:se:kth:diva-155023ScopusID: 2-s2.0-84883334307ISBN: 9781627481502OAI: diva2:760279
13th International Congress on Sound and Vibration 2006, ICSV 2006, 2 July 2006 through 6 July 2006, Vienna

QC 20141103

Available from: 2014-11-03 Created: 2014-10-29 Last updated: 2014-11-03Bibliographically approved

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Åbom, Mats
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