摘要
鉴于一般差分格式在模拟快堆系统中间热交换器的事故时会产生温度振荡现象，为了保证数值解法的稳定性和差分精度，采用全隐二阶迎风差分格式对中间热交换器进行了流量失衡模拟，彻底解决了温度振荡问题，所得结果和实验结果吻合良好，而且还可以达到超实时的模拟效果。最后，还将该方法用于对堆芯失流工况的模拟，也取得了良好的模拟效果。
To eliminate the oscillation caused by the ordinary scheme for the dynamic sim ulation of IHX (Intermediate Heat Exchanger) and ensure the stability and differ ential accuracy of numerical solution, secondorder upwind difference method is adopted to simulate the phenomena of flow imbalance in the IHX. The results agree with the experimental data very well at a faster realtime simulation. The develo ped method also give perfect results in the simu lation of loss of flow in the core.
出处
《核科学与工程》
CAS
CSCD
北大核心
1999年第4期309-314,共6页
Nuclear Science and Engineering
基金
国家自然科学基金
固有安全快堆自停堆和余热排除特性的研究
