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›› 2008, Vol. 8 ›› Issue (6): 1080-1084.

• 流动与传递 • 上一篇    下一篇

Computational Fluid Dynamic Simulation of Liquid-Liquid Mixing in a Static Double-T-shaped Micromixer

E. 王运东 戴猷元   

  1. 清华大学化工系 清华大学化学工程系
  • 收稿日期:2008-04-18 修回日期:2008-09-04 出版日期:2008-12-20 发布日期:2008-12-20
  • 通讯作者: 王运东

Computational Fluid Dynamic Simulation of Liquid-Liquid Mixing in a Static Double-T-shaped Micromixer

E. A. MANSUR WANG Yun-dong DAI You-yuan   

  1. Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua University
  • Received:2008-04-18 Revised:2008-09-04 Online:2008-12-20 Published:2008-12-20
  • Contact: WANG Yun-dong

摘要: The laminar flow structure and mixing performance of T-shaped and double-T-shaped micromixers with rectangular cross-section have been investigated using computational fluid dynamic (CFD) simulation. FLUENT software is used to evaluate the mixing efficiency. The numerical simulation results show that the presented double-T-micromixer is highly efficient over T-shaped micromixer. The performance of double-T-micromixer with and without static mixing elements (SME) is also investigated. The enhancement in mixing performance is thought to be caused by the generation of eddies and lateral velocity component when the mixture flows through these elements. Mixing efficiency as higher as 97% is reached within a mixing length of 320 mm downstream from the first T-junction with the enhancement of three SMEs.

关键词: micromixing, microfluidics, T-shaped micromixer, microfabrication, microreaction, microelectromechanica systems

Abstract: The laminar flow structure and mixing performance of T-shaped and double-T-shaped micromixers with rectangular cross-section have been investigated using computational fluid dynamic (CFD) simulation. FLUENT software is used to evaluate the mixing efficiency. The numerical simulation results show that the presented double-T-micromixer is highly efficient over T-shaped micromixer. The performance of double-T-micromixer with and without static mixing elements (SME) is also investigated. The enhancement in mixing performance is thought to be caused by the generation of eddies and lateral velocity component when the mixture flows through these elements. Mixing efficiency as higher as 97% is reached within a mixing length of 320 mm downstream from the first T-junction with the enhancement of three SMEs.

Key words: micromixing, microfluidics, T-shaped micromixer, microfabrication, microreaction, microelectromechanica systems

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