摘要
活化核心密度是核沸腾过程的重要参数，但其描述方法至今尚未统一。为了避免活化核心密度直接测量的困难，提出根据核沸腾换热机理模型预测沸腾表面的活化核心密度，预测得到的六种表面的活化核心尺度分布曲线与表面活化核心的分形分布相一致，证明了表面活化核心尺度分布具有分形特征这一结论具有普遍意义。
Active nucleation density represents a major parameter in the nucleate boiling process. However, there lacks a unified method for its description. To avoid the difficulty involved in the direct measurement of the active nucleation density, the authors have proposed a prediction method with the help of a model featuring the mechanism of nucleate boiling heat transfer. The measured active nucleate size distribution curves of six types of surfaces are in good agreement with experimental results given by predecessors active in this area of research. This fully demonstrates the reliability of the above cited model.
出处
《热能动力工程》
CAS
CSCD
北大核心
1999年第5期337-339,共3页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金
关键词
池沸腾
活化核心
尺度分布密度
传热模型
分形
nucleate boiling, active nucleus, size distribution density, heat transfer model
