Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (3): 51 doi: 10.1007/s41365-019-0574-6

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Design and flow field analysis for visualization experiment facility of pebble bed based on molten salt reactor

Mu-Dan Mei1,2 • Xing-Wei Chen1,2 • Sheng-De Sun1,2 • Rui Yan1,2 • Yang Zou1,2   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-02-02 Revised:2018-08-31 Accepted:2018-09-09
  • Contact: Yang Zou E-mail:zouyang@sinap.ac.cn
  • Supported by:
    This work was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XD02010000) and the Frontier Science Key Program of the Chinese Academy of Sciences (No. QYZDY-SSW-JSC016).
PDF ShareIt Export Citation
Mu-Dan Mei, Xing-Wei Chen, Sheng-De Sun, Rui Yan, Yang Zou. Design and flow field analysis for visualization experiment facility of pebble bed based on molten salt reactor.Nuclear Science and Techniques, 2019, 30(3): 51     doi: 10.1007/s41365-019-0574-6
Citations
Altmetrics

Abstract: Molten salt pebble bed reactor is one of the sixth-generation IV reactor types. To investigate the mechanical behavior of the fuel pebbles in the core, a visualization experiment facility of pebble bed (VEFPB) is designed. To obtain a uniform flow field of the core and analyze the influence of the flow field on the structure of the pebble bed, computational fluid dynamics software Fluent is used to simulate the flow field distribution of the core of VEFPB. The simulation results show that the disturbance at the bottom of the pebble bed is proportional to the flow velocity of the inlet pipe, and the flow velocity close to the inlet side is more significant than that in other parts; the design of the cylinder bottom plate with holes of different sizes can effectively reduce the flow velocity and the disturbance at the bottom of the pebble bed. In addition, according to the velocity contours of the core of VEFPB, it is observed that the flow field distribution of the core is considerably uniform except at the bottom of the pebble bed. This ensures the stability of the pebble bed and verifies the rationality of the design of VEFPB. This study provides the technical support and reference for the flow field analysis of the core of molten salt pebble bed reactor.

Key words: Thorium molten salt reactor (TMSR), Particle image velocimetry (PIV), Computational fluid dynamics (CFD), Experiment facility