反应堆棒束通道搅混翼数值研究  

Numerical Study on Mixing Vane in Fuel Rod Bundle Channel of Nuclear Reactors

作　　者：王烨 孙兰昕 徐长哲 胡楠 郑旭 张萌 李小畅[3] Wang Ye;Sun Lanxin;Xu Changzhe;Hu Nan;Zheng Xu;Zhang Meng;Li Xiaochang(Fundamental Science on Nuclear Safety and Simulation Technology,Laboratory,College of Nuclear Science and Technology,Harbin Engineering University,Harbin,150001,China;Nuclear Power Institute of China,Chengdu,610213,China;College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin,150001,China)

机构地区：[1]哈尔滨工程大学核科学与技术学院核安全与仿真技术国防重点学科实验室,哈尔滨150001 [2]中国核动力研究设计院,成都610213 [3]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001

出　　处：《核动力工程》2019年第6期54-58,共5页Nuclear Power Engineering

基　　金：国家自然科学基金(51409067,11805044,21876035,51709067)

摘　　要：定位格架上的搅混翼是核反应堆燃料组件中的关键部件,其性能对棒束通道热工水力特性有重要的影响。以带单层定位格架的5×5棒束为研究对象,对搅混翼排布方式及末端形状对格架下游的流场和温度场的影响进行数值模拟研究。计算结果表明,改变搅混翼的排布方式,压降几乎不受影响,但格架下游流场和传热情况却因排布方式的改变而发生显著变化;将搅混翼末端形状改为弧形,压降较典型撕裂型搅混翼没有明显差异,但换热情况得到明显改善。Mixing vanes installed in the spacer grids are significant structures of fuel assemblies in nuclear reactors, and the behavior of which has vital effect on the thermal-hydraulic characteristics of the fuel rod bundle channel. Numerical analysis of the effect of the vane arrangement and the vane tip shape was carried out to investigate the 5×5 rod bundle with single-span spacer grid. The results showed that the pressure drop was almost unaffected by the arrangement of the mixing vane, while the flow pattern and heat transfer characteristics downstream of the spacer grids varied evidently as the arrangement changed. As the shape of the vane tip changed into an arc, the pressure drop was not significantly different from that of the typical one, but the heat transfer characteristics was obviously improved.

关 键 词：CFD 燃料组件 定位格架 搅混翼 优化设计 

分 类 号：TL352.1[核科学技术—核技术及应用]