19 research outputs found

    Numerical Study of the Intrinsic and Feedback Dynamics of a Gas-Solid Fluidized Bed

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    The aim of this paper is to understand the complex spatio-temporal patterning of the dense bed when the inlet conditions can be modified by the bed itself. In this study, the inlet conditions (fluid pressure and velocity upstream the bed) take into account resistive effects from the distributor and capacitive ones from the air-supply system (plenum). The present work addresses particularly the issue of the transition between multiple and single bubble regimes that occurs for some particular inlet conditions

    Low incidence of SARS-CoV-2, risk factors of mortality and the course of illness in the French national cohort of dialysis patients

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    Microsoft Word - Bonniol_cfm2009.doc

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    Abstract : One of the current stakes in the field of fluidization relates to the comprehension of the mechanisms of acoustic interaction between the bed and the air-supply system. In a recent theoretical study, we highlighted two new dimensionless parameters connected respectively to two specific elements of the air-feed system: the plenum (tranquillization chamber under the bed) and the distributor. The aim of this work is to characterize the influence of the plenum with experiments and compare these results with those of the model
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