基于SANA实验的三维热工分析程序计算验证
Computational verification of 3D thermal analysis program based on SANA experiment
张向丞 1佘顶 1陈福冰 1石磊1
作者信息
- 1. 清华大学 核能与新能源技术研究院, 北京 100084
- 折叠
摘要
为解决传统二维热工分析程序在计算球床式高温气冷堆非对称几何结构、轴向非均匀加热等工况时结果误差大的问题,实现更加准确精细的反应堆热工水力分析,本文基于二维热工分析软件DAYU2D,建立了三维热传导和对流模型,开发了适用于球床式高温气冷堆的三维热工分析程序DAYU3D.利用DAYU3D程序,针对SANA基准实验的对称及非对称加热工况进行了模拟,并与实验结果进行了对比分析.计算结果表明:相比于二维程序,DAYU3D对于SANA实验的三维非对称工况的模拟与实验结果符合更好,因此更加适用于球床式高温气冷堆的三维热工特性分析.
Abstract
To reduce the high number of errors in traditional two-dimensional(2D)thermal-hydraulic analysis pro-grams when handling asymmetric geometries and axially nonuniform heating in the pebble bed high-temperature gas-cooled reactor(HTGR),a more accurate and detailed thermal-hydraulic analysis program called DAYU3D was de-veloped based on the 2D thermal-hydraulic analysis software DAYU2D.A 3D heat conduction and convection mod-el suitable for a spherical bed HTGR was established in DAYU3D.Subsequently,symmetric and asymmetric heat-ing conditions from the SANA benchmark experiments were simulated and compared with experimental results using this program.The calculation results revealed that compared with the 2D program,DAYU3D provides better agree-ment with the experimental results for the 3D asymmetric heating conditions of the SANA experiments than the 2D program,thus making it more suitable for the 3D thermal-hydraulic analysis of the pebble bed HTGR′s thermal characteristics.
关键词
SANA实验/三维热工分析/高温气冷堆/有限体积法/非对称/多孔介质模型/有效导热系数/球床Key words
SANA experiment/three-dimensional thermal analysis/high temperature gas-cooled reactor/finite vol-ume method/non-uniform/porous media model/effective thermal conductivity/pebble bed引用本文复制引用
基金项目
核能开发科研第六批项目(科工二司[2020]1192号)
出版年
2023
国家科技期刊平台
NSTL
维普
万方数据