非能动安全壳局部分层及分区计算研究

搭建小型非能动钢制安全壳台架，以蒸汽为工质，通过实验研究破口事故下非能动安全壳内的环流与热分层现象。结果表明：不同的喷射流量下，安全壳内均存在分层现象；分层属于局部分层而非大空间整体分层。对当前国内外常用的安全壳计算程序进行对比分析，并结合实验研究结果，提出一种根据壳内传热和流动的特点进行分类分区，然后再各自建立模型进行计算的新方法。

Research on Partial Stratification and Partition Calculation in Passive Containment

A small steel containment bench was built to study the circulation and thermal stratification in passive containment by using steam as the working medium during the loss of coolant accident (LOCA) or main steam line break (MSLB) accident. The results indicate that the stratification always exists in passive containment at different jet flow rates. However, it is a partial stratification instead of stratifying in whole space. Based on the comparison of main containment calculation codes and experimental results, a new calculation method of containment was proposed. According to the characteristics of heat transfer and flow, the space in containment was partitioned to different regions and then models were established respectively.