摘要
采用高Re k-ε模型与壁面函数法对液态金属钠在圆管中湍流传热特性进行数值计算,并与文献实验结果进行了比较,计算值与实验结果符合较好。同时应用该方法研究了湍流程度和加热条件对液态钠传热特性的影响。结果表明:湍流程度对传热的影响主要集中在流道前半段,后半段分子扩散对传热的影响逐渐凸现出来,使不同湍流程度流体传热特性的区别逐渐缩小。初始温度与热流密度对传热特性无明显影响。
The high Reynolds number k-ε model and wall function method were applied to compute numerically the turbulent heat transfer characteristics of liquid sodium flow in a cylinder tube. The numerical results are in good agreement with some experimental results in open literatures. Meanwhile, the effects of turbulence and heating conditions on the heat transfer characteristics of liquid sodium were studied by applying this method. The analysis results indicate that the influence of the turbulence is mainly reflected in the important role different turbul little effects on forepart of the tube. As the molecule diffusion effect plays a more in the middle and posterior part, the heat transfer difference between ence flows reduces gradually. The initial temperature and heat flux have heat transfer characteristics.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2013年第9期1535-1538,共4页
Atomic Energy Science and Technology
基金
核能开发课题"钠沸腾热工水力特性研究"资助项目(HK.KD1003-4)
中央高校基本科研业务费专项资金资助项目(93D1c130000063)
陕西省教育厅科学研究计划自然科学专项资助项目(12JK0786)
关键词
液态金属钠
湍流
传热特性
数值计算
liquid sodium turbulence heat transfer characteristic numerical computation
