湍流中微小冰晶融化时间的理论研究
Theoretical study on melting time of tiny ice crystals in turbulent water
摘要：
为了消除过冷水连续制冰系统中的微小冰晶，通过建立模型，分析了湍流中微小冰晶的融化过程，提出了计算融化时间的方法，分析了融化时间与最小旋涡尺度和水温的关系。指出通过增大湍流程度，使最小旋涡尺度小于某一数值(与水温有关，可通过计算确定)，从而可以在较低的水温、较短的时间内融化水中的微小冰晶。
关键词：过冷水连续制冰,湍流,微小冰晶,融化时间,最小旋涡尺度
Abstract：
To eliminate the tiny ice crystals in the dynamic supercooled water ice-making systems, developing a model, analyses the melting process of the tiny ice crystals in turbulent water, presents a method calculating the melting time and analyses the relation between the melting time and minimum eddy scale and water temperature. Points out that enhancing turbulent degree makes the minimum eddy scale less than a certain value, which is related to water temperature and can be determined by calculation, thereby the tiny ice crystals in water could be melted at lower water temperature in shorter time.
Keywords:dynamicsupercooledwaterice-making,turbulent,tinyicecrystal,meltingtime,minimumeddyscale