[Description of the evaporation phenomenon in discrete kinetic theory]
Gas flow is considered on the basis of discrete models for the Boltzmann equation. The formation and propagation of disturbances in an initially uniform gas bounded by its plane-condensed phase in non-equilibrium with the gas are investigated when evaporation is taking place from the condensed phase. The results are numerical. Different types of unsteady solutions are obtained. The results are in very good agreement with those given by continuum models of the Boltzmann equation, and even by using discrete models with few velocities.
L'écoulement du gaz est considéré sur la base des modèles discrets pour l'équation de Boltzmann. La formation et la propagation de la perturbation dans la phase gazeuse, initialement uniforme et limitée par sa phase condensée, sont analysées quand l'évaporation prend place. L'étude est numérique. On met en évidence différents types de solutions instationnaires. Les résultats obtenus sont en bon accord avec ceux donnés par les modèles continus de l'équation de Boltzmann, et ceci même en utilisant des modèles discrets avec un nombre réduit de vitesses.
Keywords: Kinetic theory, Discrete gases, Evaporation, Mass transfer
Ioana Nicodin 1; Renée Gatignol 1
@article{CRMECA_2004__332_5-6_367_0, author = {Ioana Nicodin and Ren\'ee Gatignol}, title = {Description du ph\'enom\`ene d'\'evaporation en th\'eorie cin\'etique discr\`ete}, journal = {Comptes Rendus. M\'ecanique}, pages = {367--373}, publisher = {Elsevier}, volume = {332}, number = {5-6}, year = {2004}, doi = {10.1016/j.crme.2004.02.005}, language = {fr}, }
Ioana Nicodin; Renée Gatignol. Description du phénomène d'évaporation en théorie cinétique discrète. Comptes Rendus. Mécanique, Microgravity / La micropesanteur, Volume 332 (2004) no. 5-6, pp. 367-373. doi : 10.1016/j.crme.2004.02.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2004.02.005/
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