矩形窄缝流道内窄边附近流场的实验研究和数值模拟  

Experimental research and numerical simulation of flow field near the narrow side in a rectangular narrow channel

作　　者：徐建军[1] 陈炳德[1] 王小军[1] 熊万玉[1] 

机构地区：[1]中国核动力研究设计院空泡物理和自然循环国家级重点实验实,四川成都610041

出　　处：《水动力学研究与进展（A辑）》2006年第6期770-775,共6页Chinese Journal of Hydrodynamics

摘　　要：采用可视化实验和数值计算相结合的方法对窄缝流道内窄边附近的流场进行了研究。研究结果表明,窄边附近的流体是否发生水动力学交混行为与Re有关,层流下,窄边附近的流体不发生水动力学的交混;湍流下,窄边附近的流体发生水动力学的交混,交混转折点的Re约为1900,其交混能力随着Re的增加而增强。The flow field near the narrow side in a vertical rectangular narrow channel is studied with the numerical simulation and visualization test. The results show that the hydrodynamics exchange is closely relative to Re. Hydrodynamics exchange near the narrow side does not exist in laminar flow, hydrodynamics exchange near the narrow side exists in turbulent flow, the hydrodynamics exchange at narrow side increases with the increasing Re. The Re of transition point, where hydrodynamics exchange from disappear to appear, is about 1900.

关 键 词：窄缝 窄边 流场 

分 类 号：TV131.2[水利工程—水力学及河流动力学]