基于多孔介质模型的快堆蒸汽发生器热工水力特性数值研究  

Numerical Study of Fast Reactor Steam Generator Based on Porous Media Model

作　　者：王弘扬[1,2] 阮神辉 文青龙[1,2] 陈志强[1,2] 丁雪友 朱丽娜[3] 侯斌 Wang Hongyang;Ruan Shenhui;Wen Qinglong;Chen Zhiqiang;Ding Xueyou;Zhu Lina;Hou Bin(Department of Nuclear Engineering,School of Energy and Power Engineering,Chongqing University,Chongqing,400044,China;Key Laboratory of Low Grade Energy Utilization Technologies and Systems,Chongqing University,Chongqing,400044,China;China Institute of Atomic Energy,Beijing,102413,China)

机构地区：[1]重庆大学能源与动力工程学院核能工程系,重庆400044 [2]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044 [3]中国原子能科学研究院,北京102413

出　　处：《核动力工程》2019年第5期51-55,共5页Nuclear Power Engineering

基　　金：中央高校基本科研业务费资助(NO.0903005203508)

摘　　要：蒸汽发生器(SG)作为钠冷快堆一次侧钠与二次侧水的热交换器,其可靠程度直接影响反应堆能否安全运行,因此对SG的一次侧热工水力特性的研究具有重要意义。本研究采用多孔介质模型,对快堆蒸汽发生器一次侧流场进行分析。通过对支撑板模型的计算,获得多孔介质控制方程的阻力源项。一次侧向二次侧的释热量通过系统程序Relap5计算,确定多孔介质控制方程的能量源项。通过用户自定义程序将动量源项与能量源项编译至FLUENT求解器中。通过FLUENT求解器求解控制方程,获得SG一次侧流场、压力场、温度场等信息。并通过对比模拟结果与设计值,验证了计算的准确性。As a heat exchanger between the primary side sodium and secondary side water,the steam generator(SG)is a crucial equipment ensuring the safe operation of the reactor.Thus it is essential to analyze the hydraulic characteristics in primary side of SG.In this paper,a numerical investigation of three-dimensional thermo-hydraulic characteristics in the primary side of a fast reactor steam generator is simulated based on the porous media model.The momentum source term for the porous media model is obtained by investigating the flow characteristics in tube support plates(TSPs)and tube bundle region.The heat transfer from secondary coolant to primary sodium is calculated by RELAP5 code,and the energy source term is compiled into FLUENT solver by user defined functions(UDF).The thermo-hydraulic characteristics of the SG are obtained by solving the governing equations by ANSYS FLUENT solver.The accuracy of the simulation is verified by comparing with the designed data.

关 键 词：钠冷快堆 蒸汽发生器(SG) 数值模拟 

分 类 号：TL353.13[核科学技术—核技术及应用]