An attempt is made to investigate the ability of the revised K FIX code to the solution to natural convection. The new experimental data of the benchmark problem of the IAEA coordinated research program (CRP 3) on hea...An attempt is made to investigate the ability of the revised K FIX code to the solution to natural convection. The new experimental data of the benchmark problem of the IAEA coordinated research program (CRP 3) on heat transport and afterheat removal for GCRs under accident conditions provided by JAERI are used to calculate nitrogen natural convection in the pressurized vessel and air natural convection in the reactor cavity by using this revised code. Based on analysis, a refined mesh is used to solve the differential equations so as to get more detailed and more accurate result. The obtained velocity profiles are consistent with the result of TRIO EF code and the result of Bechtel laboratory. It can be drawn that the revised K FIX code can be used to solve this kind of problems. 展开更多
介绍了非能动设计在压水堆核电机组二回路余热导出方面的工程应用。以我国自主研发的在建堆型"华龙一号"中的二回路非能动余热排出系统(PRS)为研究对象,介绍了系统的设备组成、机组在不同运行条件下PRS系统的运行模式。对PRS...介绍了非能动设计在压水堆核电机组二回路余热导出方面的工程应用。以我国自主研发的在建堆型"华龙一号"中的二回路非能动余热排出系统(PRS)为研究对象,介绍了系统的设备组成、机组在不同运行条件下PRS系统的运行模式。对PRS系统投运后从热源和热阱两方面对系统运行特性进行定性分析。分析了系统自动控制逻辑中主要因素的不同触发现象对P R S系统投运的影响,并根据分析结果对系统控制逻辑提出了改进建议。展开更多
文摘An attempt is made to investigate the ability of the revised K FIX code to the solution to natural convection. The new experimental data of the benchmark problem of the IAEA coordinated research program (CRP 3) on heat transport and afterheat removal for GCRs under accident conditions provided by JAERI are used to calculate nitrogen natural convection in the pressurized vessel and air natural convection in the reactor cavity by using this revised code. Based on analysis, a refined mesh is used to solve the differential equations so as to get more detailed and more accurate result. The obtained velocity profiles are consistent with the result of TRIO EF code and the result of Bechtel laboratory. It can be drawn that the revised K FIX code can be used to solve this kind of problems.
文摘介绍了非能动设计在压水堆核电机组二回路余热导出方面的工程应用。以我国自主研发的在建堆型"华龙一号"中的二回路非能动余热排出系统(PRS)为研究对象,介绍了系统的设备组成、机组在不同运行条件下PRS系统的运行模式。对PRS系统投运后从热源和热阱两方面对系统运行特性进行定性分析。分析了系统自动控制逻辑中主要因素的不同触发现象对P R S系统投运的影响,并根据分析结果对系统控制逻辑提出了改进建议。
