ONE-DIMENSIONAL FREEZING OF SEAWATER IN A CONSTRAINED VOLUME

A numerical time-dependent model of the one-dimensional fusion of seaw ater with limited salt rejection has been developed. The process of la tent heat release, as brine cools and freezes, as well as changes of t he specific heat capacity and thermal conductivity of sea ice with tem perature have been incorporated into the model. The model predicts the variation of the brine temperature and the motion of the liquid-solid interface. Laboratory experiments have been performed to verify the m odel. Five centimetre layers of fresh water and brine of salinities 5, 10, 15, and 20 parts per thousand were poured on an insulated surface and exposed to cold air from above. A comparison between the experime ntal results and the model prediction shows satisfactory agreement.