冷空气中水滴的冷却与冻结过程研究  

INVESTIGATION OF COOLING AND FREEZING OF WATER DROPLET IN THE COLD AIR

作　　者：王皆腾[1] 刘中良[1] 黄玲艳[1] 程水源[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022

出　　处：《工程热物理学报》2008年第8期1360-1362,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50376001);国家重点基础研究发展规划项目(No.2005CB724201);北京市拔尖创新人才选拔计划项目

摘　　要：本文通过实验和数值模拟手段研究冷空气中水滴的冷却和随后的冻结过程。微小水滴被黏附在热电偶感温点上并置于冷空气中,测量了水滴冷却和冻结过程中的温度变化。用显微镜观察了冻结过程的现象,建立了水滴冻结的相变动力学模型。在此基础上的数值模拟结果基本与实验相符。The cooling and freezing process of water droplet in cold air was investigated through exper- iment and numerical simulation.In our experiment,the water droplet was adhered to the conjunction of a thermocouple and put in the cold air.The temperature of the water droplet was measured;the phenomenon was observed by a microscope.Dynamic model of water phase change has been put forward.Simulation results based on this model agree with the experimental measurements.

关 键 词：水滴 过冷 相变 冻结 

分 类 号：TK124[动力工程及工程热物理—工程热物理]