【摘要】 介绍了一种直流蒸汽发生器的可移动边界模型。该模型按流体相的不同把蒸汽发生器划分为过冷区、两相区和过热区 3个部分。利用该模型编制了直流蒸汽发生器的瞬态热工水力分析程序。编制了固定边界模型的仿真程序。与试验数据及固定边界模型计算结果比较 ,表明可移动边界模型同时具有计算速度快和精度高的特点 ,是直流蒸汽发生器动态仿真的一种比较理想的模型更多还原

【Abstract】 A movable boundary model for once-through steam generator (OTSG) is presented. The OTSG is divided into three sections (sub-cooling, two phase and superheat) according to the fluid phases in this model. Two transient thermo-hydraulic codes are developed based on the movable boundary model and fixed boundary model respectively. The calculation results show that the movable boundary model is faster, more accurate and more realistic for OTSG analysis.更多还原