Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (4): 40605-040605.doi: 10.11889/j.0253-3219.2017.hjs.40.040605

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles    

Flow distribution plate design of molten salt reactor based on pebble bed dense experiment facility

MEI Mudan, LIN Dafu, CHEN Xingwei, YAN Rui, LI Minghai, ZOU Yang   

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China
  • Received:2016-11-03 Revised:2016-12-26 Online:2017-04-10 Published:2017-04-07
  • Supported by:

    Supported by Strategic Priority Program of Chinese Academy of Sciences (No.XDA0201002)

Abstract:

Background: Molten salt pebble-bed reactor is one of the six generation IV reactor types, and is a new reactor, in the thermal-hydraulic design of pebble bed dense experiment facility (PBDE) of molten salt reactor, the uniform flow field distribution of the core is the prerequisites of the experiment, and the distribution plate plays a decisive role in the flow filed distribution of the core. Purpose: This study aims to design a reasonable distribution plate to get steady flow field in the core of PBDE, so that the fuel spheres can keep stable floating in the core. Methods: To realize uniform flow field distribution of the core, the distribution plates which have different shapes and channel arrangements are designed based on PBDE. The flow field of the core is simulated using the FLUENT software. Results: The simulation results showed that the conical distribution plate will produce some non-uniform flow field in the center area of the core, and the flat distribution plate can get the uniform flow field distribution better in the core compared with the conical distribution plate, in addition, the increase of channels or the decrease of apertures of the distribution plates can also make the flow field of the core more uniform. Conclusions: The design of the reasonable distribution plate is significant to get the uniform flow field of the core, this study shows the basis for the experiment of PBDE, and provides the technical support and reference for the later design of the core distribution plate to the molten salt reactor.

Key words: Molten salt pebble-bed reactor, Experiment facility, Distribution plate, Computational fluid dynamics (CFD)

CLC Number: 

  • TL334