自然循环CHF影响因素的灰色关联度分析  

Gray Correlation Degree Analysis of Influencing Factors in Natural Circulation

作　　者：盛程[1,2] 

机构地区：[1]上海发电设备成套设计研究院,上海200240 [2]华北电力大学核热工安全与标准化研究所,北京102206

出　　处：《山东电力技术》2015年第2期15-17,共3页Shandong Electric Power

基　　金：国家自然科学基金项目(50976033)资助

摘　　要：临界热流密度(CHF)对反应堆安全起着至关重要的作用。自然循环条件下的CHF发生受到很多因素影响,目前对其特征的把握尚不完善。基于实验获得的常压自然循环实验数据,采用反映系统序列间正、负相关性的灰色关联度量化模型,分析了加热段入口焓值、流速和出口干度对自然循环CHF的影响。通过关联度计算得到,入口焓值和出口干度与CHF呈负相关,工质流速与CHF呈正相关。Critical heat flux（ CHF） plays a vital role in the safety of reactor. CHF in rectangular channels under natural circulation are affected by many factors whose features are still not grasped perfectly.Grey correlation degree calculation model which reflects the positive and negative relation of sequences is applied to analyze the influences of inlet enthalpy value,flow velocity,and outlet dryness on CHF under natural circulation conditions.Results showed that there were negative correlations between inlet enthalpy value or outlet dryness and CHF,while a positive correlation existed between flow velocity and CHF.

关 键 词：自然循环 临界热流密度 灰色关联度 影响因素 

分 类 号：TK124[动力工程及工程热物理—工程热物理]