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Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN 印刷: 1940-2503
ISSN オンライン: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.v1.i1.30
pages 55-73

NUMERICAL STUDY OF THERMAL CHAOTIC MIXING IN A TWO ROD ROTATING MIXER

Kamal El Omari
Laboratoire des sciences de l’ingénieur Appliquées a la Mécanique et au génie Electrique (SIAME), Université de Pau et des Pays de l’Adour (UPPA), IFR, rue Jules Ferry, BP 7511, 64075 Pau Cedex, France
Yves Le Guer
Laboratoire des sciences de l’ingénieur Appliquées a la Mécanique et au génie Electrique (SIAME), Université de Pau et des Pays de l’Adour (UPPA), IFR, rue Jules Ferry, BP 7511, 64075 Pau Cedex, France

要約

In this paper, a numerical study of a chaotic mixing process that involves a highly viscous fluid is presented. The investigated mixer is composed of two circular rods maintained vertically inside a cylindrical tank. The tank and rods are heated and can rotate around their revolution axes. Chaotic flows are obtained by imposing a temporal modulation of the rotational velocity. Unsteady equations for the conservation of momentum and energy are solved by using a pressure-based code. This code has a finite volume formulation applied to unstructured hybrid grids. The efficiency of the mixer is analyzed by focusing on the quantity of thermal energy supplied to the fluid and on the quality of the temperature homogenization. The influence of different parameters is analyzed: the type of modulation, the size of its period, the direction of rotations, and the eccentricity of the rods.


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