| 基于两步形态学图像法的窄缝通道空泡份额测量方法研究 |
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| 引用本文： | 潘丽强,刘洋,李卫华,刘野菲.基于两步形态学图像法的窄缝通道空泡份额测量方法研究[J].原子能科学技术,2018,52(12):2256-2262. |
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| 作者姓名： | 潘丽强 刘洋 李卫华 刘野菲 |
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| 作者单位： | 清华大学 核能与新能源技术研究院，先进核能技术协同创新中心，先进反应堆工程与安全教育部重点实验室，北京100084 |
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| 摘 要： | 空泡份额是两相流动研究的基础参数之一。对于窄缝通道内的流动沸腾工况，空泡份额难以使用探针等直接测量。本文在高速摄影法基础上，提出基于两步形态学的窄缝通道出口空泡份额测量方法。该方法可解决流道上的汽泡边界识别问题，获得空泡份额的瞬时值。本文方法流型适应性好，通过与能量守恒法计算得到的时均试验结果对比，相对偏差均在17%以内，验证了本方法的准确性和可靠性。
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| 关 键 词： | 图像法 窄缝通道 空泡份额 两相流动 |
Measurement Method of Void Fraction in Narrow Channel Based on Two-step Morphological Image Method |
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| PAN Liqiang,LIU Yang,LI Weihua,LIU Yefei.Measurement Method of Void Fraction in Narrow Channel Based on Two-step Morphological Image Method[J].Atomic Energy Science and Technology,2018,52(12):2256-2262. |
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| Authors: | PAN Liqiang LIU Yang LI Weihua LIU Yefei |
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| Affiliation: | Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China |
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| Abstract: | Void fraction is one of the basic parameters for the study on two-phase flow. For flow boiling conditions in the narrow channel, it is difficult to directly measure void fraction by using probes. Through high-speed photography, a measurement method of void fraction at the exit of the narrow channel was proposed in this paper, which was based on the two-step morphological image method. This method can solve the problem of recognition for the bubble boundary at the flow channel and obtain the instantaneous values of void fraction. The method has good adaptability for various flow patterns. Comparing with the time-averaged results calculated by the energy conservation method, the relative deviation is less than 17%. The accuracy and reliability of the method are verified. |
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| Keywords: | image method narrow channel void fraction two-phase flow |
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