Abstract
In this paper we report about experimentally-observed ice-layer growth rates when the rectangular vessel is filled with water and cooled from the top, where the five other walls are all insulated. The initial water temperatures are varied from 4℃ to 50℃. Vigorous convection and the rapid cooling of water body are observed when the initial temperature is greater than 30℃. Elapsed times for the ice-layer to grow to 25 mm in thickness increase linearly with the initial temperature. However, they become nearly constant, and independent from the initial temperatures, when the initial temperatures are over 30℃.
