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Article Dans Une Revue Ultrasonics Sonochemistry Année : 2022

Simulations of a full sonoreactor accounting for cavitation

Résumé

In spite of the increasing interest in ultrasound processing applications, industrial scale-up remains limited, in particular by the unavailability of predictive computer tools. In this study, using a previously published model of cavitating liquids implementable as a non-linear Helmholtz equation, it is shown that a full sonoreactor can be modelled and simulated. The model includes the full transducer and the vibrations of the vessel walls, using the physics of elastic solids and piezo-electricity. The control-loop used by the generator to set the optimal frequency is also accounted for. Apart from the geometry, the unique input of the model is the current feeding the transducer whereas the dissipated electrical power, transducer complex impedance and working frequency are available as outputs. The model is put to the test against experiments realized in different geometries, varying either the input current or the transducer immersion depth. Despite the overestimation of the power dissipated in the liquid, the evolution of the acoustic load in both cases is reasonably well reproduced by simulation, which partially validates the method used.
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hal-03857038 , version 1 (18-11-2022)

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Igor Garcia-Vargas, Laurie Barthe, Pascal Tierce, Olivier Louisnard. Simulations of a full sonoreactor accounting for cavitation. Ultrasonics Sonochemistry, 2022, 91, pp.106226. ⟨10.1016/j.ultsonch.2022.106226⟩. ⟨hal-03857038⟩
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