摘要
运用三维变密度不可压计算流体力学方法对微型Y形冲击射流进行流动结构研究。结果表明:入射角度和入射速度是影响流场结构和混合效果的两个重要因素。通过对流场结构的分析、混合效应的定性和定量分析以及对流场中分割强度的研究发现,入射角度和入射速度越大,分割强度越小,混合效果就越好。
A three-dimensional computational fluid dynamics method, which solving incompressible flow with variable density, was used in the study of the flow structures in a set of Y typed micro impinging jets. Results show that the angle of jets and the injet speed are two important parameters which effect on the flow structures and mixing properties. From the study of flow structures, qualitative and quantitative analyses and the exam of intensity of segmentation, it is seen that the larger the angle of injets and the injet speed, the smaller the intensity of segmentation, and the better the mixing effect. It is because the larger the angle of jets and injet speed, the easier the fluid breaks up and distributes in the cavity, and in the way to the exit, it is mixed very well.
出处
《华东理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第3期438-446,共9页
Journal of East China University of Science and Technology
基金
国家博士后研究基金(20060390620)
关键词
微型冲击射流
流动混合
三维数值模拟
优化设计
micro impinging jets
fluid mixing
three-dimensional numerical simulation
optimal design
