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Article Dans Une Revue Physics of Fluids Année : 2023

Fluid-structure model for disks vibrating at ultra-high frequency in a compressible viscous fluid

Résumé

Radial mechanical modes of miniature disk-shaped resonators are promising candidates for probing the ultra-high-frequency rheological properties of liquids. However, the lack of an analytical fluid-structure model hinders the inference of liquid properties from the experimental measurement of such radial vibrations. Here we develop analytical models for the case of a disk vibrating in a compressible viscous liquid. Closed-form expressions for the mechanical quality factor and resonant frequency shift upon immersion are obtained, which we compare to the results of numerical modeling for a few significant cases. At frequencies above 1 GHz, our model points out the significance of compressibility effects.
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Dates et versions

hal-04224459 , version 1 (02-10-2023)

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H. Neshasteh, M. Ravaro, I. Favero. Fluid-structure model for disks vibrating at ultra-high frequency in a compressible viscous fluid. Physics of Fluids, 2023, 35 (5), ⟨10.1063/5.0139251⟩. ⟨hal-04224459⟩
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