一种射流振荡式微通道流量计的设计与仿真  

Design and simulation of fluidic flowmeter for the measurement of liquid flow in microchannel

作　　者：刘世刚[1] 谢代梁[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2012年第4期353-357,共5页Journal of China Jiliang University

基　　金：国家自然科学基金资助项目(No.11002137);浙江省教育厅科研项目(No.Y201018818)

摘　　要：以射流振荡技术为基础,设计了一种用于测量微通道内液体流量的射流振荡式流量计.通过对微通道射流流量计结构模型的FLUENT数值仿真,研究流体流动过程的振荡特性及振荡原理,进而优化结构参数,建立微通道内液体流速与振荡频率的特性关系.最终的仿真结果表明,射流振荡式流量计附壁稳定,切换灵敏,斯特劳哈尔数恒定,在一定程度上为微通道射流流量计的设计及优化提供了有效的途径.A fluidic flowmeter capable of measuring liquid flow rate in the micro-channel on the basis of the jet oscillation technology was presented.FLUENT was employed and numerical simulation was applied to analyze the model of the micro-channel fluidic flowmeter,through which to study the characteristic and principle of the fluidic oscillation,optimize the structural parameters and establish the relationship between the flow velocity in the micro-channel and the frequency of the jet oscillation.The simulation results show that the oscillation of the fluidic flowmeter is stable,the jet switch is sensitive,and the Strouhal number is constant in certain range.To some extent,some effective methods for the design and optimization of the micro-channel fluidic flowmeter can be provided.

关 键 词：微通道 附壁效应 射流振荡 流体仿真 

分 类 号：TH814[机械工程—仪器科学与技术]