摘要
混和层流动是多种流动的原型流场,一直受到众多研究者的重视,对气液两相混合层流动进行研究有助于研究离散相气泡与流场中的大尺度拟序涡结构之间的相互作用机理。本文对竖直方形通道内主流雷诺数1819条件下的单相和气液两相平板混和层流动进行可视化研究,分析了单相混和层流动中不同形式的涡的合并过程,并与同样条件下的泡状流混和层的发展过程进行了对比,得到了气泡对涡合并的影响规律。
The flow of mixing layer is the prototype of many flows and attacted many researchers. The investigation of gas-liquid two-phase mixing layer flow is helpful to understand the mechanism interaction between dispersed bubbles and large scale coherent structure.In present paper single-phase and gas-liquid bubbly two-phase plane mixing layer flow was visualized when Reynolds number is 1819. The aggregation of different vortices in single-phase mixing layer flow was analyzed and compared with the bubbly mixing layer flow at the same condition.Finally the influence of bubble existence on the vortices aggregation was obtained.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2007年第z1期181-184,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.50406021
No.50521604)
教育部留学回国人员科研启动基金项目
关键词
混和层
泡状流
拟序结构
可视化
mixing layer
bubbly flow
coherent structure
flow visualization
