Numerical investigation of the effects of geometric parameters on transverse motion with slanted-groove micro-mixers

Seung Joo Baik, Jae Yong Cho, Se Bin Choi, Joon Sang Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We investigated hydrodynamic phenomena inside several passive microfluidic mixers using a Lattice Boltzmann method (LBM) based on particle mesoscopic kinetic equations. Mixing processes were simulated in a Slanted grooved micro-mixer (SGM), a Staggered herringbone grooved micro-mixer (SHM), and a Bi-layered staggered herringbone grooved micro-mixer (BSHM). Then, the effects of six geometric mixer parameters (i.e., groove height to channel height ratio, groove width to groove pitch length ratio, groove pitch to groove height ratio, groove intersection angle, herringbone groove asymmetric ratio and bi-layered groove asymmetric ratio) on mixing were investigated using computed cross-flow velocity and helicity density distributions in the flow cross-section. We demonstrated that helicity density provides sufficient information to analyze micro helical motion within a micro-mixer, allowing for micro-mixer design optimization.

Original languageEnglish
Pages (from-to)3729-3739
Number of pages11
JournalJournal of Mechanical Science and Technology
Volume30
Issue number8
DOIs
Publication statusPublished - 2016 Aug 1

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Microfluidics
Flow velocity
Hydrodynamics
Kinetics
Design optimization

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "We investigated hydrodynamic phenomena inside several passive microfluidic mixers using a Lattice Boltzmann method (LBM) based on particle mesoscopic kinetic equations. Mixing processes were simulated in a Slanted grooved micro-mixer (SGM), a Staggered herringbone grooved micro-mixer (SHM), and a Bi-layered staggered herringbone grooved micro-mixer (BSHM). Then, the effects of six geometric mixer parameters (i.e., groove height to channel height ratio, groove width to groove pitch length ratio, groove pitch to groove height ratio, groove intersection angle, herringbone groove asymmetric ratio and bi-layered groove asymmetric ratio) on mixing were investigated using computed cross-flow velocity and helicity density distributions in the flow cross-section. We demonstrated that helicity density provides sufficient information to analyze micro helical motion within a micro-mixer, allowing for micro-mixer design optimization.",
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Numerical investigation of the effects of geometric parameters on transverse motion with slanted-groove micro-mixers. / Baik, Seung Joo; Cho, Jae Yong; Choi, Se Bin; Lee, Joon Sang.

In: Journal of Mechanical Science and Technology, Vol. 30, No. 8, 01.08.2016, p. 3729-3739.

Research output: Contribution to journalArticle

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