Numerical analysis on a passive chaotic micromixer with helical microchannel.
In order to improve the mixing efficiency, the diffusion and mixing of species in the helical micro-mixer are simulated numerically. The results show that the mixing efficiency in the helical micromixer is much higher than that in the straight micro-channel and obviously higher than that in the serpentine micro-channel when Reynolds number is low. At high Reynolds number, even though the mixing efficiency in the helical micro-mixer is still much higher than that in the straight micro-channel, no obvious difference of mixing efficiency in the helical micro-mixer and serpentine micro-channel is found. The conclusions are helpful to optimize the structure of the micro-mixer.
Department of Mechanical Engineering, Zhejiang University of Science and Technology, Hangzhou 310012, PR China.
Ruijin
R
Wang
Jianzhong
J
Lin
D003198:Computer Simulation; D004058:Diffusion; D008958:Models, Molecular; D008962:Models, Theoretical; D049329:Nanostructures / Q000737:chemistry*; D017711:Nonlinear Dynamics