【摘要】 设计了一种新型的压电驱动微流体混合器(micromixer),采用计算流体力学(CFD)的方法对其性能进行了仿真研究。结果显示,该混合器可在很大程度上提高微量流体的混合效率,在雷诺数为16、悬臂梁振动频率为200Hz时,充分混合两微量流体仅需0.15s,对应的最小混合长度仅为0.9mm,这基本可以满足目前大多数微流体系统应用的需要。更多还原

【Abstract】 A new micromixer with a PZT-driven cantilever is designed and investigated through computational fluid dynamics ( CFD) method·Results indicate that the new micromixer can greatly improve the mixing effect·And the minimum mixing length of 0·9 mm and mixing time of 0·15 s are achieved with the Reynolds number of 16 and the sway frequency of 200 Hz, which could satisfy most microfluidic applications·更多还原