Abstract:

Experimental observations during freezing of aqueous sodium chloride solutions indicated that ice front development occurred in three periods.The concentration distribution near the interface was analyzed to understand the interfacial regular morphology.Both concentration and temperature profiles near the interfaces were greatly influenced by the disturbance inside or outside the zone，which induced the competition between crystals.The distribution of liquid sub-cooling played a critical role in the competition processes.The investigation of the competition phenomena is helpful to understanding the freezing characteristics of biological tissues.