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Title: The influence of an electric field on the heat transfer rate during film boiling of stagnant fluids
Authors: Verplaetsen, Filip
Berghmans, Jan #
Issue Date: Feb-1998
Publisher: Elsevier Science Inc
Series Title: Revue General de thermique vol:37 issue:2 pages:83-88
Abstract: This paper describes the influence of an electric field on the heat transfer rate during film boiling of stagnant fluids (pool boiling) on a horizontal surface. Modelling the influence of an electric field on the heat transfer during film boiling requires the knowledge of the equilibrium shape of the liquid-vapour interface. This equilibrium shape is calculated using an iterative solution technique. In each iteration step a fourth order Runge-Kutta technique is used to calculate the shape of the interface and a boundary element method is used to calculate the electric field. It is shown that the vapour bubbles formed on this interface become elongated in the presence of an electric field. This effect is accounted for in the existing heat transfer models in order to describe the influence of the electric field on the heat transfer coefficient during film boiling.On decrit l'influence d'un champ electrique sur le coefficient de transfert de chaleur pendant l'ebullition par film (ebullition en bassin) de fluides stagnants en contact avec une surface horizontale. Pour modeliser l'influence d'un champ electrique sur le coefficient de transfert de chaleur, la geometrie de l'interface liquide-vapeur doit etre connue. Cette geometrie est determinee en utilisant une technique de solution iterative. Dans chaque iteration, on utilise une technique de Runge-Kutta de quatrieme ordre pour calculer la geometrie des bulles, et une methode d'elements de frontiere pour calculer le champ electrique. Il est demontre que les bulles sont allongees par le champ electrique. Cet effet est integre dans les modeles d'echange de chaleur existants, afin de decrire l'influence du champ electrique sur le coefficient de transfert de chaleur pendant l'ebullition par film.
ISSN: 0035-3159
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Applied Mechanics and Energy Conversion Section
# (joint) last author

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