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Sediment motion induced by Faraday waves in a Hele-Shaw cell

Abstract : The interaction between the oscillatory boundary-layer flow induced by Faraday waves and a sedimentary granular layer was studied in a Hele-Shaw cell vertically vibrated. The experimental parameters were the vibration frequency f and acceleration a, and the particle diameter d_p. At a critical value for the depth of the supernatant fluid layer, ∆h_c, it was observed a transition between a flat motionless granular layer and a second regime in which the granular layer undulates and oscillates periodically. For the smallest value of dp (for which the Stokes number was St << 1) the reduced acceleration Γ = a/g (g is the acceleration of gravity) is independent on ∆h_c, while for the larger ones, Γ depends linearly on ∆h_c. Finally, it is shown that at the onset of grains motion, the wave velocity V_w = h_w f /2 (hw is the wave amplitude) depends linearly on ∆h_c and is independent of d_p.
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https://hal.archives-ouvertes.fr/hal-02529015
Contributor : Jean-Christophe Géminard <>
Submitted on : Thursday, April 2, 2020 - 9:49:17 AM
Last modification on : Tuesday, May 11, 2021 - 9:54:30 AM

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Román Martino, Alejandro Boschan, Diego Barba, Gustavo Bongiovanni, Jean-Christophe Géminard, et al.. Sediment motion induced by Faraday waves in a Hele-Shaw cell. Physical Review E , American Physical Society (APS), In press. ⟨hal-02529015v1⟩

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