圆管内超临界水上升、下降流动传热实验研究  

Experimental Study on Heat Transfer to Supercritical Water Flowing in Circular Tubes

作　　者：赵萌[1] 李虹波 张戈[1] 顾汉洋[1] 王磊[1] 程旭[1] 

机构地区：[1]上海交通大学核科学与工程学院,上海200240 [2]中科华核电技术研究院,广东深圳518026

出　　处：《原子能科学技术》2012年第B09期250-254,共5页Atomic Energy Science and Technology

摘　　要：在SWAMUP实验回路中,针对超临界水流动换热开展上升、下降流实验研究,观测到了正常传热、传热恶化、传热强化等现象。实验结果及分析表明:浮升效应导致的第一类传热恶化只会发生在上升流中,加速效应导致的第二类传热恶化与流动方向无关;表征浮升效应和加速效应无量纲参数Bu和πA能较好地从机理上预测第一类、第二类传热恶化。The experimental studies on heat transfer to supercritical water flowing upward and downward in circular tubes were carried out at the SWAMUP test facility,and the phenomena of normal heat transfer,heat transfer deterioration（HTD） and enhancement heat transfer were recorded.Test results show that HTD caused by buoyancy effect only appears in upward flow and HTD caused by acceleration effect appears both in upward flow and downward flow.In addition,several dimensionless numbers which widely apply in heat transfer correlations are assessed.It is concluded that the dimensionless number Bu and πA show unique effect on heat transfer coefficient.

关 键 词：SWAMUP 传热恶化 浮升效应 加速效应 

分 类 号：TL333[核科学技术—核技术及应用]