Extended development of a bubble percolation method to predict boiling crisis of flow boiling
Extended development of a bubble percolation method to predict boiling crisis of flow boiling
复制标题
预测流动沸腾沸腾危机的气泡渗流方法的扩展发展
DOI：
10.1016/j.ijheatmasstransfer.2020.120660
复制
发表时间：
2021
影响因子：
5.2
通讯作者：
Okamoto Koji
中科院分区：
文献类型：
--
作者：
Wang Kai;Li Chun-Yen;Pellegrini Marco;Erkan Nejdet;Okamoto Koji
由于临界热流密度（CHF）在核沸腾场中起着重要的作用，因此研究临界热流密度，特别是沸腾危机发生的机理具有重要的意义。本文提出了一种基于蒙特卡罗方法的流动沸腾CHF预测扩展数值模型。该模型考虑了泡沫的产生、增长和离开。CHF的假设是基于气泡相互作用的渗透性质。数值模拟结果与实验结果吻合较好，表明该模型可以用于预测CHF。需要进一步的工作将该模型应用于更广泛的实验和其他工作条件。
Due to the important role critical heat flux (CHF) plays in the nucleate boiling field, it is of great significance to study CHF, especially the mechanism of boiling crisis occurrence. In this study, an extended numerical model to predict CHF for flow boiling was proposed based on the Monte Carlo method. This model considers of the bubble generation, bubble growth and bubble departure. CHF was assumed based on the percolative nature of bubble interactions. Numerical simulation results showed good agreement with the experimental results, which demonstrated that this model was able to be used to predict CHF. Further works are needed to apply this model to a wider range of experiments and other working conditions.