• 反应堆工程 •

基于流固共轭传热的两相流动数值模拟及燃料子通道CHF预测研究

1. 中国核动力研究设计院 核反应堆系统设计技术重点实验室，四川 成都610213；北卡罗来纳州立大学，美国 罗利27695
• 出版日期:2020-06-20 发布日期:2020-06-20

Subcooled Boiling Simulation and Prediction of Critical Heat Flux in Fuel Subchannel Based on Conjugate Heat Transfer

FENG Linna;LI Quan;HUANG Yongzhong;LIU Zhenhai;QI Feipeng;M. Avramova

1. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China;North Carolina State University, Raleigh, NC 27695, United States
• Online:2020-06-20 Published:2020-06-20

Abstract:

On purpose of accurately simulating the subcooled boiling and then predicting the critical heat flux (CHF), subcooled boiling coupled with conjugate heat transfer was modeled based on two-phase CFD approach and interfacial transfer. This numerical approach was proved by typical fuel pin simulations firstly. On the basis of boiling two-phase flow in a fuel subchannel, a CHF prediction method, whose process is similar to CHF experiment, was developed using the wall temperature rise as a criterion. Through this method, the CHF in a fuel subchannel was simulated. The results show that the CHF prediction method developed in this paper can be used for CHF prediction in fuel assembly or other heat transfer systems and provides a new tool for the design and optimization of fuel assembly.