Nano Science and Technology Institute
Nanotech 2007 Vol. 3
Nanotech 2007 Vol. 3
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 3
Chapter 4: Micro and Nano Fluidics

Chaotic mixing using periodic and aperiodic sequences of mixing protocols in a micromixer

Authors:T.G. Kang, M.K. Singh, T.H. Kwon and P.D. Anderson
Affilation:Eindhoven University of Technology, NL
Pages:425 - 428
Keywords:chaotic mixing, mapping method, mixing protocol, micromixer
Abstract:We conducted a numerical study on mixing in a barrier embedded micromixer with an emphasis on the effect of periodic and aperiodic sequences of mixing protocols on mixing performance. A mapping method was employed to investigate mixing in various sequences, enabling us to qualitatively observe the progress of mixing and also to quantify both the rate and the final state of mixing. First, we introduce the design concept of the four mixing protocols and the route to achieve chaotic mixing of the mixer. Then, several periodic sequences consisting of the four mixing protocols are used to investigate the mixing performance depending on the sequence. Chaotic mixing was observed, but with different mixing rates and different final mixing states significantly influenced by the specific sequence of mixing protocols and inertia. As for the effect of inertia, the higher the Reynolds number the larger the rotational motion of the fluid leading to faster mixing. We found that a sequence showing the best mixing performance at a certain Reynolds number is not always superior to other sequences in a different Reynolds number regime. A properly chosen aperiodic sequence results in more enhanced mixing than for the periodic sequences.
Chaotic mixing using periodic and aperiodic sequences of mixing protocols in a micromixerView PDF of paper
Order:Mail/Fax Form
© 2014 Nano Science and Technology Institute. All Rights Reserved.
Terms of Use | Privacy Policy | Contact Us | Site Map