Étude numérique du champ de vitesse dans un échangeur à vortexNumerical study of the velocity field in a vortex heat exchanger |
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| Authors: | Stéphane Petitot Abdel Lyazid René Devienne |
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| Institution: | 1. Fluides réels en situation industrielle, UMR 7507, Institut de mécanique des fluides, 2, rue Boussingault, 67000 Strasbourg, France;2. Laboratoire d''energétique et de mécanique théorique et appliquée, UMR 7563, ENSEM, 2, avenue de la Forêt de Haye, BP 160, 54504 Vandoeuvre lès Nancy, France |
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| Abstract: | Flow through a cylindrical flat chamber, a model of some particular heat exchanger, is investigated numerically using the CFD-ACE code. Turbulence is modelled using the classical k–ε model. A better understanding of the secondary flow is then obtained: the k–ε model shows a strong dependence of the secondary flow velocity field with Reynolds number as was pointed out with precedent experimental results. Variations of the number of vortexes composing the secondary flow, giving a symmetrical or asymmetrical aspect, will influence the fluid particle trajectories and time residence. To cite this article: S. Petitot et al., C. R. Mecanique 330 (2002) 749–756. |
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| Keywords: | mécanique des fluides numérique échangeur vortex CFD écoulement secondaire computational fluid mechanics exchanger vortex CFD secondary flow |
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