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Modélisation numérique de l’abattage humide comme procédé d’assainissement de l’air

Abstract : This PhD-Thesis is dedicated to the numerical modeling of aerosol particles scavenging by drops. Investigated situations are about aerosol particles of aerodynamic diameter ranging from 1 nm to 100 µm captured in the air by water drops of diameter varying between 80 µm and 600 µm, with corresponding droplet Reynolds number ranging between 1 and 100. This air depollution modeling is achieved in two steps. The first step consists in obtaining a scavenging kernel predicting the flow rate of aerosol particles captured by a drop in a situation where several collection mechanisms may take place (Brownian, phoretic, electrostatic and inertial scavenging). The aim of the second step is to propose a numerical simulation modeling the scavenging phenomenon. To do so, the scavenging simulation includes a RANS modeling for the air flow, a Lagrangian approach for the drops and an Eulerian approach for the aerosol particles. Thus, aerosol scavenging by drops is modeled by implementing the collection kernel defined previously into a sink term in the Diffusion-Inertia model of Zaichik et al., (2004)
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Submitted on : Thursday, February 15, 2018 - 3:39:05 PM
Last modification on : Thursday, March 15, 2018 - 10:10:59 AM
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  • HAL Id : tel-01710078, version 1



Gaël Cherrier. Modélisation numérique de l’abattage humide comme procédé d’assainissement de l’air. Génie des procédés. Université de Lorraine, 2017. Français. ⟨NNT : 2017LORR0306⟩. ⟨tel-01710078⟩



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