摘要
首次应用随机分形模型建立了珠状凝结液滴的空间和尺度分布 ,然后利用已有的单个液滴的传热规律 ,得到了冷凝壁面的换热边界条件 ,进而求解冷凝壁的温度分布 ,最后得到了平均的珠状凝结换热系数 .应用上述模型对铜表面以水为介质的冷凝壁换热进行了直接数值模拟 ,并与各种压力条件下的试验数据进行了比较 .
A random fractal model of the drop size and space distribution in dropwise condensation is presented.The boundary conditions of heat conduction through the condensate wall are defined by use of the heat transfer model through a single drop proposed by Rose.Thus,the mathematical model of dropwise condensation heat transfer is established.A numerical simulation of dropwise condensation heat transfer of water on the copper wall has been performed.The results agree well with the bulk of existing experimental data and the precision is higher than that of the model proposed by Rose.
出处
《计算物理》
CSCD
北大核心
2001年第4期334-340,共7页
Chinese Journal of Computational Physics
基金
国家自然科学基金 ( 5 970 60 0 7)资助项目
