Core flow distribution design of molten salt reactor with liquid fuel

Zhenhua ZHOU; Deng PAN; Yushuang CHEN; Jianping HUANG; Xiaohan YU; Naxiu WANG

doi:10.11889/j.0253-3219.2016.hjs.39.050601

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Core flow distribution design of molten salt reactor with liquid fuel

更新时间：2021-05-25

- Core flow distribution design of molten salt reactor with liquid fuel
  封面论文
- NUCLEAR TECHNIQUES Vol. 39, Issue 5, Article number: 050601(2016)
- 作者机构：
  
  1.中国科学院上海应用物理研究所嘉定园区上海 201800;
  2.中国科学院大学北京 100049
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2016.hjs.39.050601
  CLC： TL334
- Received：22 February 2016，
  
  Accepted：2016-03-23，
  
  Published：25 January 2016
- 稿件说明：
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Zhenhua ZHOU, Deng PAN, Yushuang CHEN, et al. Core flow distribution design of molten salt reactor with liquid fuel[J]. Nuclear techniques, 2016, 39(5): 050601
DOI：

Zhenhua ZHOU, Deng PAN, Yushuang CHEN, et al. Core flow distribution design of molten salt reactor with liquid fuel[J]. Nuclear techniques, 2016, 39(5): 050601 DOI： 10.11889/j.0253-3219.2016.hjs.39.050601.

摘要

在液态燃料熔盐堆(Molten salt reactor

MSR)热工水力设计中

为实现堆芯径向功率展平需对堆芯流量分配进行设计

使得堆芯进口流量分布正比于释热量分布

而下腔室结构和流场分布对堆芯流量分配起决定性作用。利用FLUENT软件对堆芯三维流场进行模拟

通过调节下腔室结构和流量分配装置

对下腔室流场分布进行优化

最终实现堆芯流量合理分配。数值模拟结果表明

喇叭状下腔室比椭球形下腔室熔盐通道流量标准差降低4.2%

设置流量分配板熔盐通道流量标准差降低29.2%;改变下腔室结构和设置流量分配装置能够较好调节流量分配和功率分布匹配性

该结果可为液态熔盐堆堆芯优化设计提供依据。

Abstract

Background:

In the thermal-hydraulic design of molten salt reactor(MSR) with liquid fuel

the structure and the flow field distribution of lower plenum play a decisive role for the core flow distribution.

Purpose:

The mass flow distribution of core inlet is designed to match with the release heat distribution

so that the core power distribution will be flattened in radical.

Methods:

To realize the reasonable distribution of core flow

the flow field of lower plenum is optimized through adjusting the geometry of core lower plenum and flow distribution device using FLUENT software to simulate three-dimensional flow field of core.

Results:

The simulation results showed that the mass flow rate standard deviation of salt channels of trumpet-shape lower plenum is reduced by 4.2% compared with that of the ellipsoid-shape. The mass flow rate standard deviation of salt channel is reduced by 29.2% by setting the flow distribution plate.

Conclusion:

Changing the structure of lower plenum and setting the flow distribution plate are useful measures to adjust the mass flow distribution and power matching. The results can provide the basis fo

r the optimization design of MSR with liquid fuel.

关键词

Keywords

references

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