并联通道流量漂移流动不稳定性研究  

Research on Hydrodynamic Drift Instability of Parallel Channels

作　　者：彭传新[1] 昝元锋 袁德文[1] 卓文彬[1] 徐建军[1] 黄彦平[1] Peng Chuanxin;Zan Yuanfeng;Yuan Dewen;Zhuo Wenbin;Xu Jianjun;Huang Yanping(CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中国核动力研究设计院中核核反应堆热工水力技术重点实验室,成都610213

出　　处：《核动力工程》2021年第S01期17-20,共4页Nuclear Power Engineering

摘　　要：采用实验和数值模拟的方法研究了并联通道出现的流量漂移型流动不稳定。实验研究获得了流量漂移流动不稳定发生时流量、温度等参数的变化规律;数值模拟了流量漂移流动不稳定发生时空泡份额、加速压降、摩擦压降和重力压降等参数的变化规律。分析结果表明:并联通道出现的流量漂移型流动不稳定的原因是空泡份额增加引起先出热通道流体重力压降的下降。The flow drift instability in parallel channels was studied by experiments and numerical simulation in this paper.The flowrate and temperature under flow drift instability were obtained in the experiments.The variation of void fraction,acceleration pressure drop,friction pressure drop and gravity pressure drop during flow drift instability of parallel channels were numerically simulated.The results show that the decrease of gravity pressure drop in hot channel caused by the increase of void fraction is the reason for hydrodynamic drift instability of parallel channels.

关 键 词：流量漂移 流动不稳定 并联通道 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TL334[动力工程及工程热物理—热能工程]