Fishbone-like instability in a looped-tube thermoacoustic engine.

Zhibin Yu; Artur J. Jaworski; Abdulrahman S. Abduljalil

doi:10.1121/1.3486198

Fishbone-like instability in a looped-tube thermoacoustic engine.

Zhibin Yu, Artur J. Jaworski, Abdulrahman S. Abduljalil

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Abstract

Quasi-periodic bursts of acoustic oscillations were observed during the start-up process in a looped-tube thermoacoustic engine. The acoustic oscillations have a constant frequency of 111 Hz, while the bursts have "quasi-periods" in the order of 14-25 s. The quasi-periodic bursts show a new mode of amplitude growth in this thermoacoustic engine. The envelope of the acoustic oscillations has a fishbone-like shape. The nature of the observed fishbone-like instabilities suggests a strong interaction between the acoustic and temperature field.

Original language	English
Pages (from-to)	EL188-194
Journal	The Journal of the Acoustical Society of America
Volume	128
Issue number	4
DOIs	https://doi.org/10.1121/1.3486198
Publication status	Published - 10 Sept 2010

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10.1121/1.3486198

el188_1_onlineFinal published version, 1.28 MBLicence: CC BY 4.0

Cite this

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N2 - Quasi-periodic bursts of acoustic oscillations were observed during the start-up process in a looped-tube thermoacoustic engine. The acoustic oscillations have a constant frequency of 111 Hz, while the bursts have "quasi-periods" in the order of 14-25 s. The quasi-periodic bursts show a new mode of amplitude growth in this thermoacoustic engine. The envelope of the acoustic oscillations has a fishbone-like shape. The nature of the observed fishbone-like instabilities suggests a strong interaction between the acoustic and temperature field.

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M3 - Article

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