Author(s): P. Vasseur; L. Robillard; B. Chandra Shekar
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Abstract: Transient two-dimensional laminar convective cooling of water in an enclosed rectangular cavity with a convective boundary condition is approached by a numerical method. The maximum density effect and supercooling are considered in order to understand the flow and temperature fields before the onset of dendritic ice. The results obtained show that in general dendritic ice will start to form at the top cavity because of the particular stratification occurring below 4 deg. C. However, the rate of ice formation will be strongly dependent on the Biot number. For the relatively low Biot numbers, the temperature field obtained indicates that ice will occur almost uniformly inside the whole cavity. For the relatively high Biot numbers, ice will rather form on the cavity walls.
Year: 1981