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Comparison of different methods to couple nonlinear source descriptions in the time domain to linear system descriptions in the frequency domain - Application to a simple valveless one-cylinder cold engine
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-8474-8563
2006 (English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 291, no 05-mar, 963-985 p.Article in journal (Refereed) Published
Abstract [en]

In duct acoustics the fundamental sound generating mechanisms must often be described by nonlinear time domain models. A linear frequency domain model is in many cases sufficient for describing the sound propagation in the connected duct system. This applies both for fluid machines such as IC-engines and compressors and for musical wind instruments. Methods for coupling a nonlinear source description to a linear system description have been proposed by several authors. In this paper some of those methods are compared concerning accuracy, calculation time and the possibility to perform parametric studies. The model problem used is a simple piston-restriction system connected to a linear system with varying complexity. The piston and restriction are considered as the source part and are modelled nonlinearly.

Place, publisher, year, edition, pages
2006. Vol. 291, no 05-mar, 963-985 p.
Keyword [en]
harmonic-balance technique, steady-state oscillations, compressor, simulation, impedance, circuits, sound, duct
Identifiers
URN: urn:nbn:se:kth:diva-15503DOI: 10.1016/j.jsv.2005.07.046ISI: 000235872300023Scopus ID: 2-s2.0-31644434597OAI: oai:DiVA.org:kth-15503DiVA: diva2:333544
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Boden, Hans

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