摘要
提出了临界热流密度的一个分形模型,根据加热表面活化点的分形分布得到了临界热流密度的表达式,从该模型中发现大空间临界热流密度(CHF)是壁面过热度、接触角和流体物理特性的函数。接触角对临界热流密度有重要的影响。沸腾表面模型预测的结果与实验数据进行了比较,两者是极好的吻合。
In this paper, a fractal model for the critical heat flux （CHF） is proposed. The expression for the critical heat flux （CHF） is derived based on the fractal distribution of nucleation sites on boiling surfaces. The proposed fractal model for CHF is found to be a function of wall superheat, the contact angle and physical properties of fluid. The contact angle has the important effects on CHF. The predicted CHF from a boiling surface based on the proposed fractal model is compared with the existing experimental data. An excellent agreement between the proposed model predictions and experimental data is found.
出处
《三明学院学报》
2006年第4期381-384,398,共5页
Journal of Sanming University
