【作者】 方向； 刘志勇； 孙艳飞； 杨星团； 姜胜耀；

【Author】 Fang Xiang;Liu Zhiyong;Sun Yanfei;Yang Xingtuan;Jiang Shengyao;Institute of Nuclear and New Energy Technology, Tsinghua University;

【机构】 清华大学核能与新能源技术研究院；

【摘要】 在球床式高温气冷堆堆芯中,大量球形燃料元件的运动规律和运动状态对堆芯物理热工设计和反应堆安全有直接影响,基于颗粒流理论建立起的球流研究是高温气冷堆工程实践中提出的基础研究课题。如何准确地描述堆芯球流的特征是问题的核心,随机流动所造成的交混也是重点研究内容。本文使用交混概率这一概念描述球流的交混规律,建立起球流交混算法,并在实验结果的基础上对交混现象进行了研究。更多还原

【Abstract】 In the pebble bed high temperature gas cooled reactor core, the motion of a large amount of spherical fuel elements and movement state have a direct influence on the physical thermal design and reactor safety. How to describe the characteristics of pebble flow in core accurately is the key problem, and the random flow caused by cross-mixing is also the focus of research content. The cross-mixing probability serves as a description of cross-mixing rules. The cross-mixing algorithm is established. The cross-mixing phenomenon is studied on the basis of experimental results.更多还原