Acoustic coupling between the loudspeaker and the resonator in a standing-wave thermoacoustic device

David Marx, Xiaoan Mao, A.J. Jaworski

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Thermoacoustic refrigerators work with high amplitude sound waves, which are often created using an acoustic source coupled to a resonator. This coupling can be calculated analytically using linear acoustic equations and a linear model of the loudspeaker. This paper makes a comparison between such a coupling and measurements obtained in a large-scale thermoacoustic resonator constructed at the University of Manchester. The resonator was driven from low to large pressure amplitudes, with drive ratios up to 10%. It is shown that a good agreement is obtained for small amplitudes and this progressively worsens as the amplitude is increased. In the absence of wave harmonics and loudspeaker nonlinearities, the increasing discrepancy is attributed to the presence of minor losses.
LanguageEnglish
Pages402-419
Number of pages18
JournalApplied Acoustics
Volume67
Issue number5
Early online date19 Sep 2005
DOIs
Publication statusPublished - May 2006
Externally publishedYes

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acoustic coupling
loudspeakers
standing waves
resonators
thermoacoustic refrigerators
acoustics
sound waves
nonlinearity
harmonics

Cite this

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Acoustic coupling between the loudspeaker and the resonator in a standing-wave thermoacoustic device. / Marx, David; Mao, Xiaoan; Jaworski, A.J.

In: Applied Acoustics, Vol. 67, No. 5, 05.2006, p. 402-419.

Research output: Contribution to journalArticle

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