高温堆二维堆芯双区球流运动实验

Experiments of Two-Region Pebble Dynamics of Two-Dimension Core in HTR

根据相似准则的原理建立高温气冷堆二维堆芯的球流运动试验系统,开展高温气冷堆中球流运动规律的研究。从实验的角度研究了与高温气冷堆堆芯物理和结构设计密切相关的问题。实验结果表明:球流运动在微观上具有随机性和阵发性,但在宏观上具有确定性和稳定性;本实验条件下,可以形成稳定的双区图像;双区的大小随加球比例的变化成规律性变化;不同加球比例下均可得到稳定的双区,稳定时卸料口的黑白球比例与加料口相同。

According to the similarity law,the experiment system of pebble dynamics of two-dimension core in High Temperature Gas-cooled Reactor (HTGR) is established to carry out the study on the rules of pebble dynamics. The issues closely related to the reactor core physics and structure design of HTGR is experimentally studied. The experiment results indicate that the pebble dynamics is random and episodic in microcosmic aspect,but is certain and steady in macrocosmic aspect. The stable state is feasible in this experiment condition,the sizes of two regions change regularly with the variation of the proportion of black balls to the white ones,the steady two-region can be obtained in different proportions of black balls to the white ones,and the proportion in the outlet tube is the same as that in the inlet tube.