摘要
利用高速摄影仪对正方形小通道(d_h=1mm)内氮气-水两相水平流动进行可视化观察,对流动特性进行了实验研究。获得了典型的流型图像,并观测到了很少见的毛细泡状流,但是未发现常规尺寸通道中的层流流型。将本文实验结果与相关文献比较,结果表明:相同(相近)水力直径的小通道内,截面形状和实验条件对小通道内流型转变有显著的影响。
To investigate flow characteristics by high speed video systems,experimental study was conducted to nitrogen-water two-phase flow in horizontal square minichannel with hydraulic diameter of 1 mm.The typical flow pattern images were obtained.A rare capillary bubble flow was observed,but stratified flow of the conventional size horizontal channel had not been discovered.Comparisons with the relevant literatures show that both cross-section shape and experimental condition have remarkable effect on the flow pa...
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2008年第9期1507-1510,共4页
Journal of Engineering Thermophysics
基金
吉林省科技发展计划项目(No.20060704)
关键词
两相流
正方形小通道
流型
可视化
two phase flow
square minichannel
flow pattern
visualization
