棒束通道中格架对传热影响的实验研究  

Experiment Research on Effect of Spacer Grid on Heat Transfer in Rod Bundle

作　　者：干富军 刘达[2,3] 顾汉洋 朱丽兵[1] GAN Fujun;LIU Da;GU Hanyang;ZHU Libing(Shanghai Nuclear Engineering Research & Design Institute Co.,Ltd.,Shanghai 200233,China;School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;China Institute of Nuclear Information & Economics,Beijing 100037,China)

机构地区：[1]上海核工程研究设计院有限公司,上海200233 [2]上海交通大学核科学与工程学院,上海200240 [3]中国核科技信息与经济研究院,北京100037

出　　处：《原子能科学技术》2019年第4期648-653,共6页Atomic Energy Science and Technology

摘　　要：针对格架下游传热问题,开展了格架对5×5棒束通道中传热影响的实验研究,实验Re约为1 000～30 000,浮升力参数Bo~*为2×10^(-7)～3×10^(-3)。观察实验结果发现,格架下游传热与浮升力参数存在较强关联,当浮升力参数较大时,格架下游传热较复杂,且不同于人们以往对格架下游传热的认识。通过对实验数据分析,提出了新的预测格架下游传热的经验关系式,此关系式考虑了浮升力对格架下游传热的影响,且能较好地对格架下游传热进行预测。Experiments were carried out to investigate the heat transfer of spacer grid downstream in a vertical 5×5 rod bundle.The experimental Reynolds number varies from 1 000 to 30 000,and buoyancy parameter Bo*is from 2×10^-7 to 3×10^-3.It’s observed that heat transfer of spacer grid downstream is strongly dependent on buoyancy parameters.When the buoyancy parameter is high,heat transfer of spacer grid downstream is different from convectional knowledge and shows complicate behaviors.Based on the current experimental data,a new correlation accounting for the buoyancy effect was proposed and shows good predictions.

关 键 词：格架 棒束 传热 浮升力 

分 类 号：TL332[核科学技术—核技术及应用]