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DEVELOPPEMENT D'OUTILS NUMERIQUES ET EXPERIMENTAUX DEDIES A L'ETUDE DE L'EVAPORATION EN PRESENCE DE LIGNE TRIPLE

Abstract : The tasks fulfilled during this study aim at providing tools for understanding the mechanisms of liquid film evaporation. Evaporation in the presence of a triple lines is ruled by physical mechanisms acting on these singularities as well as on the gas liquid interfaces. Thus, the interface description, under it numerical as experimental aspects, is a key point of this study. A numerical tridimentionnal sharp interface tracking tool has been developed to be used in further numerical simulation of the evaporation problem. In this algorithm, the interface is described as a quadratic grid surface. Its convergence orders relatively to geometrical para- meters of the interface (curvature, normal, position) has been studied. In the mean time, an experimental optical inversion technique has been developed and vali- dated. It allows a dynamic measurement of the interface shape in the vicinity of the triple line of highly wetting fluid. This method has been applied to the case of a quasi axisymetric evaporating film and provides a first quantification of the heat and mass transfers generated by the triple line region.
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https://tel.archives-ouvertes.fr/tel-00629921
Contributor : Loic Tachon <>
Submitted on : Tuesday, October 11, 2011 - 5:06:12 PM
Last modification on : Thursday, January 18, 2018 - 1:27:00 AM
Long-term archiving on: : Thursday, January 12, 2012 - 2:21:18 AM

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  • HAL Id : tel-00629921, version 1

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Loic Tachon. DEVELOPPEMENT D'OUTILS NUMERIQUES ET EXPERIMENTAUX DEDIES A L'ETUDE DE L'EVAPORATION EN PRESENCE DE LIGNE TRIPLE. Energie électrique. Université de Provence - Aix-Marseille I, 2011. Français. ⟨tel-00629921⟩

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