Theory and modeling of cylindrical thermo-acoustic transduction

Tong, L. H.; Lim, C.W.; Zhao, Xiushao; Geng, Daxin

doi:10.1016/j.physleta.2016.05.002

Cited by 14 publications

(8 citation statements)

References 24 publications

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“…(5) of Ref. [43]). In our model, we also assumed a cylinder length much larger than the radius to simplify the mathematical problem.…”

Section: Cylindrical Geometrymentioning

confidence: 99%

“…Alternatively, a piston based model for cylindrical shapes is also found in the Tong et al work. 43 This technique was then applied to model thinline arrays. 34 All these models have been implemented and compared with our approach in the next discussion.…”

Section: A Comparison With Models From the Literaturementioning

confidence: 99%

“…In Fig. 7, a full cylinder radiating in free field is considered and our results are compared to the Tong model 43 and to the Yin and Hu model 30 . In his model, Tong and colleagues consider a uniformly heated cylindrical conductor and therefore they neglect the influence of the heat capacity of the thermophone.…”

Section: Cylindrical Geometrymentioning

confidence: 99%

“…Frequency spectrum of a full cylinder radiating in free field. The presented multilayer model is compared to the Tong model43 and to the Yin and Hu model30 (original, with surface energy density, and modified, with volumetric energy density). The wavenumbers for Tong model and for Yin and Hu model are calculated through a zero order approximation as in the original literature in panel a) and corrected with the first order approximation (see Eq.…”

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confidence: 99%

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Thermoacoustic wave generation in multilayered thermophones with cylindrical and spherical geometries

Guiraud

Giordano

Matar

et al. 2021

Journal of Applied Physics

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A thermoacoustic sound generation model, based on the classical balance equations of the continuum mechanics, is here developed for the cylindrical and the spherical thermoacoustic wave generation. In both geometries, the model considers an arbitrary multilayered structure, where each layer can be fluid or solid and it is characterized by the fully coupled thermo-visco-acoustic response. It means that the viscous behavior and the thermal conduction are considered in each layer. The model is based on a unified representation of cylindrical or spherical thermoacoustic waves, which is valid for both fluid and solid phases. Thanks to the continuity of temperature, particle velocity, normal stress and heat flux between adjacent layers, the model can be implemented by means of a versatile matrix approach, allowing flexible analysis and design of cylindrical or spherical thermophones. Any thermoacoustic variable can be determined at any position, any frequency and for any input power. The results are compared with the models already existing in the literature and the underlying physics is thoroughly discussed. The analysis is focused on the better understanding of the thermoacoustic generation with application to the state of the art of the thermophone technology.

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“…(5) of Ref. [43]). In our model, we also assumed a cylinder length much larger than the radius to simplify the mathematical problem.…”

Section: Cylindrical Geometrymentioning

confidence: 99%

Section: A Comparison With Models From the Literaturementioning

confidence: 99%

Section: Cylindrical Geometrymentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Thermoacoustic wave generation in multilayered thermophones with cylindrical and spherical geometries

Guiraud

Giordano

Matar

et al. 2021

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…Unlike the TA device designed by Shinoda et al [3], a non-substrated structure TA transducer introduced by Xiao et al [6] enables most of the thermal energy to heat the surrounding medium (fluidic or gaseous medium), resulting in a higher energy conversion. In pursuit of alternative forms, multiple types of TA devices were subsequently reported, including CNT assemblies [9], metallic wire arrays and metallic thinfilms [10][11][12][13][14], graphene-on-paper [15], CNT yarn array suspended on a substrate [5], carbon fiber array encapulated in a planar enclosure [16], carbonized electrospun nanofiber sheets [17] and even individual CNTs [18,19].…”

Section: Introductionmentioning

confidence: 99%