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Experimental Research of Pebble Dynamics of Two-Region Reactor Core in HTR

[+] Author Affiliations
Xiuzhi Zhang, Youjie Zhang, Xingtuan Yang, Zhiyong Liu, Shengyao Jiang

Tsinghua University, Beijing, China

Paper No. ICONE18-29660, pp. 115-118; 4 pages
  • 18th International Conference on Nuclear Engineering
  • 18th International Conference on Nuclear Engineering: Volume 6
  • Xi’an, China, May 17–21, 2010
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4934-7
  • Copyright © 2010 by ASME


According to the similarity law, the experimental system of pebble dynamics of two dimensions reactor core in HTR can be established. With the execution of phenomenological research of the moving rules of pebbles, it is available to obtain distribution of path lines, curves of degree of dispersion, and distribution of stagnant time. The results turn out to be that (1) the motion of a single pebble is partially diffused and random in micro view, but the rule of all pebbles is assured and steady in macro view; (2) curves of degree of dispersion continue to increases at first and then decrease gradually. The degree of dispersion of bilateral pebbles is bigger than that of central ones; (3) stagnant time is mainly linear to height and the ratio of stagnant time of radical location and central location increase when a pebble is moving down.

Copyright © 2010 by ASME



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