| 自然循环两相流系统压降特性研究 |
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| 引用本文： | 王飞,马昌文,博金海,张佑杰,姜胜耀.自然循环两相流系统压降特性研究[J].清华大学学报(自然科学版),1996(11). |
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| 作者姓名： | 王飞 马昌文 博金海 张佑杰 姜胜耀 |
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| 作者单位： | 清华大学核能技术设计研究院 |
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| 基金项目： | 国家“八五”科技攻关项目 |
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| 摘 要： | 两相流压降特性是两相流稳定性研究中的重要特征参数，不同类型的不稳定有不同的压降特性与之对应。本文在清华大学核能技术设计研究院的５ＭＷ热工水力模拟实验台架上对自然循环条件下两相流压降与系统流量的关系进行了实验研究。对自然循环和强迫循环流动中压降流量特性进行了比较。实验发现在发生振荡时，压降与流量反相，加热段入口欠热度保持不变。在压降流量相图上，振荡呈现为逆时针方向周期６ｓ的极限圈。
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| 关 键 词： | 两相流稳定性 压降特性 极限圈 自然循环 |
Study on pressure drop characteristic of natural circulating two phase flow system |
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| Wang Fei,Ma Changwen,Bo Jinhai,Zhang Youjie,Jiang Shengyao Institute of Nuclear Energy Technology,Tsinghua University.Study on pressure drop characteristic of natural circulating two phase flow system[J].Journal of Tsinghua University(Science and Technology),1996(11). |
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| Authors: | Wang Fei Ma Changwen Bo Jinhai Zhang Youjie Jiang Shengyao Institute of Nuclear Energy Technology Tsinghua University |
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| Abstract: | Two phase flow pressure drop characteristic is an important parameter in the study of two phase flow stability. Static and dynamic characteristics of pressure drop vs. flow rate in the process of natural circulation were studied on the apparatus of 5 MW nuclear heating reactor hydrodynamic modelling test loop. The pressure drop characteristic in natural circulation was compared with that in forced circulation. It was found that pressure drop in the process of oscillation is opposite phase to flow rate and the inlet subcooling of heating section remains constant. A counter clockwise limit cycle with period of 6 seconds is found in the phase picture of pressure drop and flow. |
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| Keywords: | two phase flow stability pressure drop characteristics limit cycles natural circulation |
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