温度增量对冰水固流转化速率影响的实验研究

Experimental study of effects of temperature increment on ice-water solid-fluid transformation rate

通过RPH-80型可程序恒温恒湿试验箱研究了温度增量对圆柱体冰块融化速率的影响。研究结果表明:试验箱的温度在0℃~50℃区间内,随着温度增量的增大,圆柱体冰块的融化速率逐渐加快。通过数据分析,得出了圆柱体冰块的温度增量与融化时间、融化速率都呈多项式函数规律变化。选取温度增量为20℃的冰块融化过程进行ANSYS数值仿真验证,得出:圆柱体冰块棱边部分最先开始融化;随着时间的增长,冰块的侧面比上表面开始融化的时间早,这亦与实际的融化状况相符。

The effects of temperature gradient on the cylinder ice melting rate are studied through the RPH-80 type programmable test box with constant temperature and humidity. The results showed that: the melting rate of the cylinder block is gradually accelerated with the increase of the temperature increment in the temperature of the test box ranging from 0 to 50℃. Based on the data analysis, the empirical formula for the relationship between the temperature increment and the melting rate of ice is obtained. Similarly, the ice melting process with temperature increment of 20℃ is selected to verify the numerical simulation results of ANSYS. The melting law of the cylinder ice is obtained. The experiments of solid-fluid transformation about materials go into the in-depth exploration step and has are of important theoretical significance and practical value.