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- W2058470223 abstract "A finite volume numerical code has been developed to numerically approximate the rate of ice crystal growth in a laminar falling film flowing down a cooled vertical plate. The governing energy equation contains the phase energy as the source term. Enhancement of heat transfer as a result of suspended ice crystals is accounted for in the use of effective values of thermal conductivity, viscosity, thermal diffusivity, and specific heat as function of volumetric concentration of ice crystals in the falling film. Nusselt number, overall heat transfer coefficients between the fluid and cooled plate, and ice crystal growth rate were calculated for different film thicknesses with and without axial diffusion. Nusselt number and ice crystal growth rates were found to be dependent on film thickness. Axial diffusion effects were found to be negligible for larger film thickness (large flowrate). On a établi un code numérique de volume fini afin de calculer de façon approximative la vitesse de formation de cristaux de glace dans un film tombant laminaire qui coule le long d'une plaque verticale refroidie. L'équation énergétique qui s'applique à ce processus utilise énergie de la phase comme principe de base. On tient compte de l'augmentation du transfert de chaleur due aux cristaux de glace suspendus dans les valeurs de conductivité thermique, viscosité, diffusivité thermique et chaleur massique en fonction de la concentration volumétrique des cristaux de glace dans le film tombant. On a calculé le nombre de Nusselt, les coefficients de transfert de chaleur globaux entre le fluide et la plaque refroidie et la vitesse de formation de cristaux de glace pour des films d'épaisseur différentes, avec ou sans diffusion axiale. On a montré que le nombre de Nusselt et les vitesses de formation de cristaux de glace étaient fonction de l'épaisseur du film. On a montré aussi que les effets de la diffusion axiale étaient négligeables pour des épaisseurs de film les plus importantes (où le flux est important)." @default.
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- W2058470223 date "1999-08-01" @default.
- W2058470223 modified "2023-10-03" @default.
- W2058470223 title "Effect of axial conduction on the ice crystal growth in laminar falling films" @default.
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- W2058470223 doi "https://doi.org/10.1016/s0140-7007(98)00078-4" @default.
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