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| 过冷沸腾蒸汽-水两相流真实含汽率模型 | |
| 引用本文： | 孙奇,杨瑞昌,覃世伟,赵华.过冷沸腾蒸汽-水两相流真实含汽率模型[J].清华大学学报(自然科学版),2004,44(11):1580-1584. |
| 作者姓名： | 孙奇 杨瑞昌 覃世伟 赵华 |
| 作者单位： | 1. 清华大学,热能工程系,北京,100084;中国核动力研究设计院,成都,610041 2. 清华大学,热能工程系,北京,100084 3. 中国核动力研究设计院,成都,610041 |
| 基金项目： | 国家自然科学基金资助项目(59995460-1)，核工业科学基金资助项目(Y7100E5101) |
| 摘 要： | 过冷沸腾蒸汽水两相流相分布特性计算对核反应堆的热工设计与安全分析非常重要。该研究建立了计算过冷沸腾真实含汽率的非线性热平衡微分方程;基于在过冷沸腾起始点和饱和沸腾起始点分别存在2个拐点的特点,提出了高、低入口过冷度工况下沸腾流道内真实含汽率计算模型,模型中同时给出了饱和沸腾起始点的计算公式。根据该模型获得真实含汽率后可采用漂移流模型得出真实空泡率。在较大的压力、质量流速和热流密度工况范围内的该模型计算结果与现有的大量蒸汽水空泡率实验数据一致性较好。 |
| 关 键 词： | 过冷沸腾 真实含汽率 真实空泡率 计算模型 |
| 文章编号： | 1000-0054(2004)11-1580-05 |
| 修稿时间： | 2004年2月16日 |
Prediction of true mass quality in subcooled steam-water flow boiling |
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| SUN Qi,YANG Ruichang,QIN Shiwei,ZHAO Hua.Prediction of true mass quality in subcooled steam-water flow boiling[J].Journal of Tsinghua University(Science and Technology),2004,44(11):1580-1584. | |
| Authors: | SUN Qi YANG Ruichang QIN Shiwei ZHAO Hua |
| Institution: | SUN Qi~1,2,YANG Ruichang~1,QIN Shiwei~1,ZHAO Hua~21. Department of Thermal Engineering,Tsinghua University,Beijing 100084,China, 2. Nuclear Power Institute of China,Chengdu 610041,China |
| Abstract: | The prediction of the phase distribution in subcooled steam-water flow boiling is significant for accurate thermal design and safety analysis of nuclear reactors. A nonlinear heat balance equation was used to calculate the true mass quality. The behavior of the two inflection points for the onset of nucleate boiling and the onset of saturated boiling was used to solve the nonlinear equation for the mass quality for boiling in a channel with high and low inlet subcoolings. A correlation was also developed to calculate the onset of saturated boiling. The model for the mass quality can be used to calculate the void fraction using the drift flux model. The model agrees well with measured steam-water void fraction data from different sources over wide ranges of pressure, mass flux and heat flux conditions. |
| Keywords: | subcooled flow boiling true mass quality true void fraction calculation model |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |