水在冷却和冻结过程温度场的实验与理论研究

在自行开发的“多通道温度数据智能采集系统”的基础上，进行了圆柱形容器内水的冷却和冻结实验，并基于ANSYS的有限元分析法对其冷却和冻结过程进行了计算机模拟。结果表明：自行研发的“多通道温度数据智能采集系统”人机界面友好、使用方便、运行可靠、成本低廉、用途广泛，极具推广性；计算机模拟与实验结果相吻合。本文提出的基于ANSYS热分析的有限元分析方法在冷却和冻结过程的温度场研究中具有诱人的应用前景；冻结过程越靠近筒壁相变越早发生，相变持续时间就越短；相变前越靠近筒壁，降温速率越大，降温曲线的线性分布越明显，相变后则与此相反。

Experimental and theoretical study on temperature distribution of water in a cylindrical container during cooling and freezing process

Based on the muhichannel temperature data intellect acquisition system which was developed by self, carring out the liquor cooling and freezing test in the cylinder utensil,then cooling and freezing process was analyzed by Computer simulation based on ANSYS of finite element analytic.The result show that,the multichannel temperature data intellect acquisition system developed by self has some advantages,such as interface friendly,operate conveniently,used reliably,cost lowly,used widely,spread widely,and computer simulation show good agreement with experimental test.This paper presents a method of finite element analytic based on ANSYS ,which has exciting application prospect in the temperature-field research of cooling and freezing process;in the freezing process, the nearer outside container it closes, the earlier phase change it happens,the shorter time it continues;and the nearer outside conminer it closes before phase change,the greater temperature rate it gets,the more obvious the linear distribution property of the curve of lowering temperature,which were on the contrary after phase change.