Numerical Investigation of Conjugated Heat Transfer of the Plate-Type Fuel Assembly in the Research Reactor
Numerical Investigation of Conjugated Heat Transfer of the Plate-Type Fuel Assembly in the Research Reactor
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研究堆板式燃料组件共轭传热数值研究
DOI：
10.3389/fenrg.2021.663533
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发表时间：
2021-09
期刊：
影响因子：
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通讯作者：
Quanping Li;Q. Ma;Yuanming Li;Ping Chen;Chao Ma;Bo Zhao;Hao Chen
中科院分区：
文献类型：
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作者：
Quanping Li;Q. Ma;Yuanming Li;Ping Chen;Chao Ma;Bo Zhao;Hao Chen
在核反应堆中，研究燃料组件中燃料与冷却剂之间的共轭传热是提高反应堆安全性、可靠性和经济性的基础。基于计算流体力学（CFD）的数值方法可以实现对共轭传热的快速分析。此外，数值模拟可以为燃料组件的设计和优化提供详细的物理场。在高功率密度的研究堆中，板式燃料通常用于增强传热。本研究以研究堆中的标准板型燃料组件为研究对象。对燃料组件与冷却剂的固流耦合传热进行了数值研究。在流体区，将Rensselaer理工学院模型引入到欧拉多相流法中，建立了过冷流动沸腾模拟模型。结果表明，所建立的模型可以模拟燃料组件与冷却剂的共轭传热。研究了流体速度、功率密度和通道宽度对温度分布和共轭换热的影响。
In nuclear reactors, the research of conjugated heat transfer between the fuel and coolant in the fuel assembly is fundamental for improving the safety, reliability and economy. The numerical approach based on Computational Fluid Dynamics (CFD) can be used to realize the rapid analysis of the conjugated heat transfer. Besides, the numerical simulation can provide detailed physical fields that are useful for the designing and optimizing of the fuel assembly. The plate-type fuels are generally used to enhance heat transfer in research reactors with high power density. In this study, a standard plate-type fuel assembly in the research reactor was taken into consideration. The solid-fluid conjugated heat transfer of the fuel assembly and coolant was numerically investigated. In the fluid region, the subcooled flow boiling simulation model was established by implementing the Rensselaer Polytechnic Institute model into the Euler multi-phase flow method. The results show that the conjugated heat transfer of the fuel assembly and coolant can be simulated using the model established in this work. The influence of fluid velocity, power density and the width of the flow channel on the temperature distribution and the conjugated heat transfer was investigated and discussed.