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Simulation eulérienne-lagrangienne d'écoulements gaz-solide non isothermes : interactions particules-turbulence, application aux écoulements en conduite

Abstract : The aim of this work is to contribute to the numerical modeling of turbulent gas-solid flows in vertical or horizontal non isothermal pipes, which can be found in many industrial processes (pneumatic transport, drying, ). The model is based on an Eulerian-Lagrangian approach allowing a fine description of the interactions between the two phases (action of the fluid upon the particles (dispersion), action of the particles upon the fluid (two way coupling) and between particles (collisions)), more or less influential according to the characteristics of the flow. The numerical developments brought to the model in vertical and horizontal pipe flow have been validated by comparison with available experimental results from the literature. The sensitivity tests highlight the influence of the dispersion model, collisions and turbulence modulation on the dynamic and thermal behavior of the suspension.
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http://docnum.univ-lorraine.fr/prive/SCD_T_2004_0006_CHAGRAS.pdf
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Submitted on : Thursday, March 29, 2018 - 10:39:56 AM
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Valérie Chagras. Simulation eulérienne-lagrangienne d'écoulements gaz-solide non isothermes : interactions particules-turbulence, application aux écoulements en conduite. Autre. Université Henri Poincaré - Nancy 1, 2004. Français. ⟨NNT : 2004NAN10006⟩. ⟨tel-01746539⟩

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