基于泊松与分形分布研究池沸腾临界热流密度

A Study for Critical Heat Flux in Pool Boiling Based on Poisson and Fractal Distribution

基于加热表面核化点遵循泊松与分形分布,提出了临界热流密度的一个数学模型,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。对不同的接触角,模型预测的结果与实验数据进行了比较,两者很好地吻合。

A mathematical model is derived based on the poisson and 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 model predictions are compared with the existing experimental data,and fair agreement between the model predictions and experimental data is found for different contact angles.