Título:
Acoustic transparency and absorption in dense granular suspensions
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Autor:
Tourin, Arnaud
Abraham, Yamil
Palla, Marie
Le Ber, Arthur
Pierrat, Romain
Benech, Nicolás
Negreira, Carlos
Jia, Xiaoping
Abraham, Yamil
Palla, Marie
Le Ber, Arthur
Pierrat, Romain
Benech, Nicolás
Negreira, Carlos
Jia, Xiaoping
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Tipo de documento:
Preprint
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Palabras clave:
Acoustic measurements
Acoustic wave phenomena
Ultrasonics
Granular materials
Acoustic wave phenomena
Ultrasonics
Granular materials
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Año de publicación:
2025
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Resumen:
We demonstrate the existence of a frequency band exhibiting acoustic transparency in 2D and 3D dense granular suspensions, enabling the transmission of a low-frequency ballistic wave excited by a high-frequency broadband ultrasound pulse. This phenomenon is attributed to spatial correlations in the structural disorder of the medium. To support this interpretation, we use an existing model that incorporates such correlations via the structure factor. Its predictions are shown to agree well with those of the Generalized Coherent Potential Approximation (GCPA) model, which is known to apply at high volume fractions, including the close packing limit, but does not explicitly account for disorder correlation. Within the transparency band, attenuation is found to be dominated by absorption rather than scattering. Measurements of the frequency dependence of the absorption coefficient reveal significant deviations from conventional models, challenging the current understanding of acoustic absorption in dense granular media.
Descripción:
Publicado también en: Physical Review E, 2026, 113(2): 025411. DOI: 10.1103/jy8q-mfmm
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arXiv
EN:
Soft Condensed Matter, arXiv:2510.09486, oct. 2025. pp. 1-15.
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Citación:
Tourin, A, Abraham, Y, Palla, M [y otros autores]. "Acoustic transparency and absorption in dense granular suspensions" [Preprint]. Publicado en: Soft Condensed Matter. arXiv:2510.09486, oct. 2025. pp. 1-15. 15 h. DOI: 10.48550/arXiv.2510.09486
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Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| arXiv.2510.09486.pdf | — | 3.75 MB | Adobe PDF |