1. Numerical study of the velocity field in a vortex heat exchanger.
- Author
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Petitot, Stéphane, Lyazid, Abdel, and Devienne, René
- Subjects
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FLUID dynamics , *VORTEX motion , *HEAT exchangers - 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: thek –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. [Copyright &y& Elsevier]- Published
- 2002