Fishbone-like instability in a looped-tube thermoacoustic engine

Zhibin Yu, AJ Jaworski, Abdulrahman S. Abduljalil

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


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 languageEnglish
Pages (from-to)EL188-EL194
Number of pages7
JournalJournal of the Acoustical Society of America
Issue number4
Early online date10 Sep 2010
Publication statusPublished - Oct 2010
Externally publishedYes


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