生长及脱离汽泡附壁接触直径经验关系式

基金项目:

中国核动力研究设计院空泡物理和自然循环重点实验室基金(9140C7101020802)

重庆大学211工程“3期建设项目”(S-09101)

国家自然科学基金(50406012)

Correlation for Prediction of Growing and Detaching Bubble Contact Diameter on a Heating Wall

1. School of Power Engineering, Chongqing University, Chongqing, 400044, China;
2. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 对汽泡附壁接触直径随汽泡生长的变化过程进行了现象描述和理论分析。对大量已有文献中相关的实验数据进行分析,得到汽泡无因次附壁接触直径随无量纲汽泡生长时间的变化关系,提出了与无量纲汽泡生长速度、无量纲汽泡半径相关的汽泡附壁接触直径经验关系式。在确定此关系式中的2个系数后,关系式能很好地预测文献中的汽泡附壁接触直径,误差在±20%以内。
- 汽泡附壁接触直径 /
- 汽泡生长 /
- 经验关系式
Abstract: Phenomenal and theoretical analysis on the evolution of bubble contact diameter during bubble growing is presented in this paper,and it was found that the bubble contact diameter is dependent on the bubble growth rate and bubble radius strongly.By analyzing the regarding experimental data published in the literature,the relation between dimensionless bubble contact diameter,and dimensionless bubble growth time is obtained;based on this relation,a correlation relative to dimensionless bubble growth rate and dimensionless bubble radius are proposed for prediction of bubble contact diameter.With proper values of coefficients,a_w and n_w,this correlation can well predict the bubble contact diameter data published in the literature,with an error within ±20%.
- Bubble contact diameter on heating wall /
- Bubble growth /
- Experimental correlation