熔盐球床堆堆芯入口热工水力特性数值分析

冯权胜; 徐博; 潘登; 邹杨; 徐洪杰

doi:10.11889/j.0253-3219.2017.hjs.40.090601

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熔盐球床堆堆芯入口热工水力特性数值分析

核能科学与工程 | 更新时间：2021-05-19

- 熔盐球床堆堆芯入口热工水力特性数值分析
  封面论文
- Thermal-hydraulics numerical analyses of molten salt pebble-bed reactor core inlet
- 核技术 2017年40卷第9期文章编号：090601
- 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
  3.核动力运行研究所武汉 430223
- 作者简介：
  
  [ "冯权胜, 男, 1990年出生, 2014年毕业于西安理工大学, 现为硕士研究生, 研究领域为钍基熔盐反应堆流场设计", "FENG Quansheng, male, born in 1990, graduated from Xi'an University of Technology in 2014, master student, focusing on the design of thorium based molten salt reactor" ]
  邹杨, E-mail:zouyang@sinap.ac.cn ZOU Yang, E-mail:zouyang@sinap.ac.cn
- 基金信息：
  
  若干关键问题研究项目(QYZDY-SSW-JSC016);中国科学院战略性先导科技专项项目(XDA0201002)
- DOI：10.11889/j.0253-3219.2017.hjs.40.090601
  中图分类号： TL33
- 收稿日期：2016-11-04，
  
  修回日期：2017-04-13，
  
  纸质出版日期：2017-09
- 稿件说明：
移动端阅览
冯权胜, 徐博, 潘登, 等. 熔盐球床堆堆芯入口热工水力特性数值分析[J]. 核技术, 2017,40(9):090601

Quansheng FENG, Bo XU, Deng PAN, et al. Thermal-hydraulics numerical analyses of molten salt pebble-bed reactor core inlet[J]. Nuclear techniques, 2017, 40(9): 090601
冯权胜, 徐博, 潘登, 等. 熔盐球床堆堆芯入口热工水力特性数值分析[J]. 核技术, 2017,40(9):090601 DOI： 10.11889/j.0253-3219.2017.hjs.40.090601.

Quansheng FENG, Bo XU, Deng PAN, et al. Thermal-hydraulics numerical analyses of molten salt pebble-bed reactor core inlet[J]. Nuclear techniques, 2017, 40(9): 090601 DOI： 10.11889/j.0253-3219.2017.hjs.40.090601.

摘要

堆芯入口流场设计是小型固态燃料熔盐堆系统项目内容之一，它对反应堆结构的稳定性、堆芯温度和流场分布有着非常重要的影响。研究了熔盐流道流通面积变化对堆芯入口温度、流场分布及压降的影响，优化熔盐流道几何结构。以小型熔盐球床堆模型为研究对象，取符合实际边界条件的输入参数，通过改变熔盐流道流通面积，使用计算流体力学（Computational Fluid Dynamics，CFD）通用程序Fluent 16.0对堆芯入口内熔盐的热工水力特性进行数值模拟。在考虑实际下反射层流道的流通面积占比最大为18.14%下，研究了熔盐流道流通面积占比在区间[0，15.00%]变化。结果表明，堆芯活性区熔盐最高局部热点温度随熔盐流道流通面积比的增大而增高；堆芯入口内的压降随下反射层熔盐流道流通面积比的减小而增大；在径向方向上流进孔道的熔盐流速随着孔道远离堆芯位置而增大。本研究可为小型固态燃料球床熔盐堆优化设计提供一定的参考价值。

Abstract

Background:

The flow field design at the core inlet has a particularly important influence on structure stability

temperature distribution and flow field of a small solid fuel salt reactor system.

Purpose:

This study aims to optimize the flow channel structure by analyzing the effect of the thermal-hydraulic characteristics.

Methods:

Base on the design of a small molten salt pebble-bed reactor

input parameters of the practical boundary conditions were adopted for simulation study using Fluent 16.0 of computational fluid dynamics (CFD).Thermal-hydraulic characteristics such as temperature field

flow field and pressure drop

of core inlet were simulated through changing the flow areas.

Results:

The computational results showed that when proportion of the flow area was in the range of[0

15.00%]

the maximum local temperature in the active core region increased and the pressure drop in the core inlet decreased with the increase of the flow area.As the channel is far away from the core position

salt velocity increases gradually along the radial direction.

Conclusion:

The numerical results provide a useful proposal to optimize the design of a small solid fuel salt reactor.

关键词

Keywords

references

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