AC600非能动安全壳冷却系统长期效应分析

利用自主开发的用于先进压水堆AC600非能动安全壳冷却系统的专用三维热工水力分析程序PCCSAC－3D，对AC600安全壳在大破口失水事故情况下进行了长期效应分析，该程序把钢安全壳内部的工质分为水蒸汽，不可凝干空气，连续相水和非连续相水，对气相引入k-ε湍流计算模型并考虑由于气体浓度差引起的扩散效应。PCCSAC－3D程序充分考虑了各种空间非均匀的物理因素的影响，能够较精细描述在发生核电厂设计基准情况下出现与安全壳非能动冷却系统有关的各种物理现象，本文对安全壳进行长期效应的分析结果表明，AC600非能动安全壳冷却系统能够保证安全壳的完整性。

Long-Term Effect Analysis of AC600 Passive Containment Cooling System

This paper presents long-term effect analysis of AC600 passive containment cooling system under loss-of-coolant accident (LOCA). It uses the PCCSAC-3D code, which is a special code to analyze the performance of the AC600 passive containment cooling system (PCCS) developed by Tsinghua University. The code classifies the working fluid in the containment into steam, uncondensable air, continuous liquid state water and discontinuous water and includes k-e turbulence model and diffusion model for main gas flow. The code considers non-uniform factors of space carefully. It can be used to analyze the majority physical phenomenon of the AC600 PCCS accurately. This paper gets the conclusion that the PCCS can ensure the integrality of the AC600 containment in the long-term.