ACME台架程序建模及试验初始条件确定方法研究

先进热工水力试验(ACME)台架是以CAP1400核电厂为原型、采用1/3高度的比例进行设计的非能动堆芯冷却系统整体性试验台架。本工作采用NOTRUMP程序完成了对试验台架的建模，制定了不同试验工况下初始条件的确定方法。利用所建立的ACME台架NOTRUMP程序模型及初始条件，针对冷段5.08 cm破口工况和平衡管线（PBL）双端断裂工况进行了模拟，并与CAP1400核电厂对应工况的计算结果进行了对比。结果表明，ACME台架NOTRUMP程序模型设置合理，初始条件确定方法恰当，台架能正确反映原型电厂不同失水事故工况下的系统响应。

Study on Code Modeling and Test Initialization Condition Method of ACME Facility

The ACME (advanced core-cooling mechanism experiment)facility is an inte-grated test facility for passive core cooling systems,with 1/3 height scale of CAP1400 nuclear power plant.The NOTRUMP code model of the ACME facility and the initial-ization condition method for different test conditions were established in the paper.Two types of tests,5.08 cm break at the cold leg and the parallel balance line (PBL)double-ended break,were calculated using the NOTRUMP code model of ACME facility and the initialization condition.The results were compared with those of CAP1400 nuclear power plant.The results show that the NOTRUMP code model of ACME facility and the initialization condition method are acceptable,and the facility can reflect system re-action of CAP1400 nuclear power plant correctly in different LOCA conditions.