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Influence de la disposition des électrodes sur le transfert de chaleur dans des canaux horizontaux.

Electrode arrangement impact on heat transfer in horizontal channels.

Auteurs : GANNOUN R., ELKAHZEN M. I., HASSEN W., et al.

Résumé

This numerical study deals with the problem of electro-thermoconvection of a dielectric fluid placed in horizontal channel and subjected to the simultaneous action of an electric field and a thermal gradient thus it considers electrostatic forces exerted to natural convection of air flowing inside the channel. Governing equations of electrohydrodynamic phenomenon are formulated and the mathematical modeling has been carried out by the resolution of the whole set of coupled equations: Navier Stokes equations, the Poisson equation and the equation of conservation of electric charge in order to investigate the electrohydrodynamic enhanced secondary flow and heat transfer coefficient in two dimensional flow of an incompressible fluid. The aim of this work is to conclude about the effect of electrode arrangement on heat transfer. The characteristics of flow and heat transfer are discussed in conjunction with the parameters comprising Rayleigh number, electric Rayleigh and obviously electrodes position. In fact this work represents a first step in the aim to achieve a global model of a solar chimney.

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Détails

  • Titre original : Electrode arrangement impact on heat transfer in horizontal channels.
  • Identifiant de la fiche : 30017663
  • Langues : Anglais
  • Source : 1st International Refrigeration, Energy and Environment Colloquium. Proceedings: Hammamet, Tunisia, March 24-27, 2016.
  • Date d'édition : 24/03/2016

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