Abstract
A fmite volume numerical code has been developed to nwnerically 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 termoEnhancement of heat transfer due to 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 numbers, 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 rate were found to be dependent on Stefan number and film thickness. Axial diffusion effects were found to be negligible for larger film thickness (large flowrate). Enhancement of heat transfer was noticed for the case of two phase flow with ice crystals.
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