The numerical investigation of a new passive micromixer with improved Tesla structure

YanFeng Fan, Ibrahim Hassan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, 3D numerical simulations are performed to investigate the mixing process within an improved Tesla micromixer. This improved Tesla micromixer applies the flow separation/recombination and converging/diverging principles to enhance mixing. A portion of the working fluid, which separates from the main flow, enters the Tesla side branch and mixes with the main flow again at the exit of the Tesla unit. The tested volume flow rate ranges from 1 μL/min to 100 μL/min. Grid independence is carried out to minimize the effect of numerical diffusion. Optimization is done to determine three parameters, which are the gap ratio (H/W), the mixing cell number (N), and the angle at the gap inlet (β). The effects of these three parameters on mixing are investigated at a volume flow rate of 100 μL/min. The simulation results show that the gap ratio is the most important factor. Three parameters are selected as H/W = 50/200, N = 10 and β = 90° for further investigation. The traditional Tesla micromixer is also simulated for comparison with the present design. The mixing efficiency is approximately 60% in the range of the tested volume flow rate. The improved micromixer has better mixing efficiency than the traditional Tesla micromixer when the volume flow rate is less than 50 μL/min.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009
Pages789-795
Number of pages7
EditionPART B
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009 - Pohang, Korea, Republic of
Duration: 22 Jun 200924 Jun 2009

Other

Other7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009
CountryKorea, Republic of
CityPohang
Period22/6/0924/6/09

Fingerprint

Flow rate
Flow separation
Fluids
Computer simulation

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Fan, Y., & Hassan, I. (2009). The numerical investigation of a new passive micromixer with improved Tesla structure. In Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009 (PART B ed., pp. 789-795) https://doi.org/10.1115/ICNMM2009-82004

The numerical investigation of a new passive micromixer with improved Tesla structure. / Fan, YanFeng; Hassan, Ibrahim.

Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B. ed. 2009. p. 789-795.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fan, Y & Hassan, I 2009, The numerical investigation of a new passive micromixer with improved Tesla structure. in Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B edn, pp. 789-795, 7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009, Pohang, Korea, Republic of, 22/6/09. https://doi.org/10.1115/ICNMM2009-82004
Fan Y, Hassan I. The numerical investigation of a new passive micromixer with improved Tesla structure. In Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B ed. 2009. p. 789-795 https://doi.org/10.1115/ICNMM2009-82004
Fan, YanFeng ; Hassan, Ibrahim. / The numerical investigation of a new passive micromixer with improved Tesla structure. Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B. ed. 2009. pp. 789-795
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