000014034 001__ 14034
000014034 005__ 20161115094008.0
000014034 04107 $$aeng
000014034 046__ $$k2016-08-21
000014034 100__ $$aLangthjem, Mikael
000014034 24500 $$aFlow-acoustic interaction in an expansion chamber-pipe system

000014034 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014034 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014034 506__ $$arestricted
000014034 520__ $$2eng$$aThe paper is concerned with the generation of sound by the flow through a closed, cylindrical expansion chamber, followed by a long tailpipe. The sound generation is due to self-sustained flow oscillations in the expansion chamber which, in turn, may generate standing acoustic waves in the tailpipe. The main interest is in the interaction between these two sound sources. An analytical, approximate solution of the acoustic part of the problem is obtained via the method of matched asymptotic expansions. The sound- generating flow is represented by a discrete vortex method, which is modified to include the effects of acoustic feedback. It is demonstrated that lock-in of the self-sustained flow oscillations to the resonant acoustic waves in the tailpipe can take place.

000014034 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014034 653__ $$a

000014034 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014034 720__ $$aLangthjem, Mikael
000014034 8560_ $$ffischerc@itam.cas.cz
000014034 8564_ $$s154942$$uhttps://invenio.itam.cas.cz/record/14034/files/PO.FS01-1.04.329.pdf$$yOriginal version of the author's contribution as presented on CD, XMLout( page 3079, code PO.FS01-1.04.329).
000014034 962__ $$r13812
000014034 980__ $$aPAPER