Study on mass flow distribution of CSR1000

Jie CHEN; Tao ZHOU; Liang LIU; Bangyang XIA

doi:10.11889/j.0253-3219.2017.hjs.40.030605

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Study on mass flow distribution of CSR1000

NUCLEAR ENERGY SCIENCE AND ENGINEERING | 更新时间：2021-05-19

- Study on mass flow distribution of CSR1000
- NUCLEAR TECHNIQUES Vol. 40, Issue 3, Article number: 030605(2017)
- 作者机构：
  
  1.华北电力大学核科学与工程学院北京 102206
  2.华北电力大学核热工安全与标准化研究所北京 102206
  3.非能动核能安全技术北京市重点实验室北京 102206
  4.核反应堆系统设计技术国家级重点实验室成都 610041
- 作者简介：
- 基金信息：
  
  Supported by Key Laboratory of Nuclear Technology Design of Nuclear Reactor Systems Research;Central University Basic Research and Operating Funds
- DOI：10.11889/j.0253-3219.2017.hjs.40.030605
  CLC： TL36
- Received：08 October 2016，
  
  Revised：16 November 2016，
  
  Published：10 March 2017
- 稿件说明：
移动端阅览
Jie CHEN, Tao ZHOU, Liang LIU, et al. Study on mass flow distribution of CSR1000[J]. Nuclear techniques, 2017, 40(3): 030605
DOI：

Jie CHEN, Tao ZHOU, Liang LIU, et al. Study on mass flow distribution of CSR1000[J]. Nuclear techniques, 2017, 40(3): 030605 DOI： 10.11889/j.0253-3219.2017.hjs.40.030605.

摘要

以中国百万千瓦级超临界水冷堆（CSR1000）堆芯为研究对象，建立热工水力计算模型，计算出冷却剂和慢化剂温度分布、堆芯功率分布、燃料组件出口压力及流量分配等参数。计算结果表明，适当增加堆芯内部燃料组件流量比例，可以有利于径向功率展平，内外燃料组件通道出口压降，呈现"N"型变化，增大内部燃料组件的堆芯入口功率，内部组件内的流量分配也将减少，而外部燃料组件通道中的流量将增加，适当调整堆芯入口流量初始分配比例，可以使各通道功率分布展平。

Abstract

Background

Reactor core of supercritical water-cooled reactor of China (CSR1000) is selected as research object.

Purpose

The establishment of thermal-hydraulic calculation model is to calculate coolant outlet flow and the outlet pressure

which is on the condition of changing the core power

flow and temperature distribution

and the size of the core inlet structure.

Methods

Taking the SCAC (Steady supercritical water-cooled reactor analysis code) safety analysis code as calculation method.

Results

The calculated results show that adjusting moderately the flow distribution of initial inlet fuel assembly will distribute uniformly the flow distribution of respective sub-channel. Inside and outside of the fuel assembly channel outlet pressure drop show an "N" shaped variation. Increasing the inlet core power of internal fuel assembly will reduce the flow distribution within internal fuel assembly.

Conclusion

Adjusting moderately the flow distribution of initial inlet core will distribute uniformly the power distribution.

关键词

Keywords

references

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