摘要
以全微分公式为数学基础 ,提出了可连续移动相边界的直流式蒸汽发生器(OTSG)模型。为了改善数值求解稳定性 ,在用状态变量的空间差分来逼近空间导数时 ,根据不同情况采用前向差分或后向差分。根据该模型编制的程序对OTSG的动态进行仿真 。
A new mathematical model for calculating the dynamic behavior of once through steam generators is presented.The model utilizes a movable boundary spatial discretization technique based on the total differential formula.To improve numerical stability,forward or backward difference is chosen in different cases while spatial differences are used to approximate spatial derivaives.A computer code based on this model is developed and performs well in thermal hydraulic predictions of once through steam generator.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2000年第3期197-201,共5页
Nuclear Power Engineering
