摘要
基于一维两相四方程漂移流模型,采用数值模拟方法对5 MW低温核供热堆热工模拟回路(HTRL-5)的自然循环进行模拟,分析在自然循环系统中存在的分岔特性及其参数效应。结果表明:在一定条件下,低干度自然循环两相流动系统存在静态分岔现象,静态分岔点出现在特征曲线的切点上;当压力高到一定程度或热流密度小到一定程度时,系统的分岔点消失。
Based on the one-dimension two-phase drift flow model, the simulation of natural circulation system characteristic under HTRL-5 condition was performed. The bifurcation characteristic of two-phase flow system as well as the parameter effect under natural circulation condition was analyzed. The results show that the bifurcation phenomenon occurs under certain conditions and it occurs at the tangent point of the characteristic curve of the system. The bifurcation phenomenon disappears while the system pressure increases or the heat flux decreases to some extent.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2007年第2期180-184,共5页
Atomic Energy Science and Technology
基金
国家自然科学基金资助项目(10372050)
国家杰出青年基金资助项目(50325620)
关键词
分岔
自然循环
两相流动
bifurcation
natural circulation
two-phase flow
