A unified stability analysis method for spontaneous oscillation condition s in thermoacoustic systems via measured frequency response data with application to standing- and traveling-wave engines

Kobayashi, Yasuhide; Shinoda, Shotaro; Nakata, T.; Yamada, Noboru

doi:10.1016/j.jsv.2019.05.038

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…Apart from the transfer matrix method, the root locus method [57,58] and Nyquist stability criterion [59][60][61], rooted in control theory, have also proved to be useful in obtaining the eigenfrequencies from the characteristic equations. In the root locus method [58], the loci of the roots of the characteristic equation are plotted for different temperature ratios in the complex s-plane.…”

Section: Linear Thermoacoustic Instabilitymentioning

confidence: 99%

Multi-physics coupling in thermoacoustic devices: A review

Chen

Tang

Mace

et al. 2021

Renewable and Sustainable Energy Reviews

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Section: Linear Thermoacoustic Instabilitymentioning

confidence: 99%

Multi-physics coupling in thermoacoustic devices: A review

Chen

Tang

Mace

et al. 2021

Renewable and Sustainable Energy Reviews

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“…A vital issue, influencing the widespread implementation of thermoacoustic installations in the future, is an increase in their operational parameters, enabling them to compete with traditional, commercially mature technology. Although computational techniques are increasingly being used in the design and optimization field of the aforementioned devices [9], experimental investigation remains crucial for solving vital challenges in the design of sophisticated installations [10,11]. However, availability of works considering complete preparation of experimental setup for testing of compact thermoacoustic refrigerators, from the initial design consideration up to final assembling level, is strongly limited.…”

Section: Figure 2 Diagram Of the Device With An Acoustic Loop: Athe mentioning

confidence: 99%

Design of simple refrigerating device for multiparametric analysis of the thermoacoustic cooling phenomenon

Grzywnowicz

Remiorz

2019

International Journal of Thermodynamics

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Although the widespread introduction of numerical tools and the CFD models have improved the design methodology of thermoacoustic coolers and eased optimization of such units, high computational costs vitally limit their application in parametric analyses of thermoacoustic devices. Thus, experimental investigation remains essential field of research, considering design of such units. In the paper, the design and construction of an experimental setup, dedicated to perform an extensive multiparametric analyses on compact thermoacoustic devices with varying characteristic parameters, is discussed in detail. A complete design path, beginning with general consideration, with further detailed dimensioning and selection of market-available parts, ending with installation of control and data acquisition equipment, is described. Initial testing of the device, performed both computationally at the design stage and experimentally after the final setup assembling, is discussed as well. The results of the tests demonstrated ability to observe the variability in the operational parameters of the cooler following change in number of environmental and constructional parameters. The data acquired indicated vital importance of the stack porosity and frequency of the acoustic wave on performance of the thermoacoustic device, which corresponds to the data presented in the literature.

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