The numerical simulation of a passive interdigital micromixer with uneven lamellar width

YanFeng Fan, Ibrahim Hassan

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

Abstract

In this paper, a passive micromixer with interdigital structure is proposed and investigated using numerical simulations. The micromixer contains three layers to achieve the interdigital flow structure. The height of mixing channels is fixed as 0.2 mm. The total width of inlets is 0.9 mm. The mixing regime is rectangular in shape. The Reynolds number, measured at the entrance of straight channel, ranges from 5 to 60. Grid independence is performed to minimize the influence of numerical diffusion on simulation results. The grid size is selected as 6 μm, which can be considered as optimal. The interdigital micromixers with straight downstream channels are designed and simulated. In order to achieve better mixing near the inner walls, uneven lamellae width of each species is applied to create a larger concentration gradient near the inner walls. The results show that the micromixer with uneven lamellar width is able to enhance the mixing near the inner walls. A new passive micromixer with the uneven interdigital inlets is also designed to improve the mixing efficiency at high Re. The simulation results show that this new micromixer has a mixing efficiency larger than 80%, and a maximum pressure drop of 2.7 KPa.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009
Pages813-819
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

Computer simulation
Flow structure
Pressure drop
Reynolds number

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Fan, Y., & Hassan, I. (2009). The numerical simulation of a passive interdigital micromixer with uneven lamellar width. In Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009 (PART B ed., pp. 813-819) https://doi.org/10.1115/ICNMM2009-82076

The numerical simulation of a passive interdigital micromixer with uneven lamellar width. / Fan, YanFeng; Hassan, Ibrahim.

Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B. ed. 2009. p. 813-819.

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

Fan, Y & Hassan, I 2009, The numerical simulation of a passive interdigital micromixer with uneven lamellar width. in Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B edn, pp. 813-819, 7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009, Pohang, Korea, Republic of, 22/6/09. https://doi.org/10.1115/ICNMM2009-82076
Fan Y, Hassan I. The numerical simulation of a passive interdigital micromixer with uneven lamellar width. In Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B ed. 2009. p. 813-819 https://doi.org/10.1115/ICNMM2009-82076
Fan, YanFeng ; Hassan, Ibrahim. / The numerical simulation of a passive interdigital micromixer with uneven lamellar width. Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009. PART B. ed. 2009. pp. 813-819
@inproceedings{697b30de1e9e489e847e41d414fdd2ca,
title = "The numerical simulation of a passive interdigital micromixer with uneven lamellar width",
abstract = "In this paper, a passive micromixer with interdigital structure is proposed and investigated using numerical simulations. The micromixer contains three layers to achieve the interdigital flow structure. The height of mixing channels is fixed as 0.2 mm. The total width of inlets is 0.9 mm. The mixing regime is rectangular in shape. The Reynolds number, measured at the entrance of straight channel, ranges from 5 to 60. Grid independence is performed to minimize the influence of numerical diffusion on simulation results. The grid size is selected as 6 μm, which can be considered as optimal. The interdigital micromixers with straight downstream channels are designed and simulated. In order to achieve better mixing near the inner walls, uneven lamellae width of each species is applied to create a larger concentration gradient near the inner walls. The results show that the micromixer with uneven lamellar width is able to enhance the mixing near the inner walls. A new passive micromixer with the uneven interdigital inlets is also designed to improve the mixing efficiency at high Re. The simulation results show that this new micromixer has a mixing efficiency larger than 80{\%}, and a maximum pressure drop of 2.7 KPa.",
author = "YanFeng Fan and Ibrahim Hassan",
year = "2009",
doi = "10.1115/ICNMM2009-82076",
language = "English",
isbn = "9780791843499",
pages = "813--819",
booktitle = "Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009",
edition = "PART B",

}

TY - GEN

T1 - The numerical simulation of a passive interdigital micromixer with uneven lamellar width

AU - Fan, YanFeng

AU - Hassan, Ibrahim

PY - 2009

Y1 - 2009

N2 - In this paper, a passive micromixer with interdigital structure is proposed and investigated using numerical simulations. The micromixer contains three layers to achieve the interdigital flow structure. The height of mixing channels is fixed as 0.2 mm. The total width of inlets is 0.9 mm. The mixing regime is rectangular in shape. The Reynolds number, measured at the entrance of straight channel, ranges from 5 to 60. Grid independence is performed to minimize the influence of numerical diffusion on simulation results. The grid size is selected as 6 μm, which can be considered as optimal. The interdigital micromixers with straight downstream channels are designed and simulated. In order to achieve better mixing near the inner walls, uneven lamellae width of each species is applied to create a larger concentration gradient near the inner walls. The results show that the micromixer with uneven lamellar width is able to enhance the mixing near the inner walls. A new passive micromixer with the uneven interdigital inlets is also designed to improve the mixing efficiency at high Re. The simulation results show that this new micromixer has a mixing efficiency larger than 80%, and a maximum pressure drop of 2.7 KPa.

AB - In this paper, a passive micromixer with interdigital structure is proposed and investigated using numerical simulations. The micromixer contains three layers to achieve the interdigital flow structure. The height of mixing channels is fixed as 0.2 mm. The total width of inlets is 0.9 mm. The mixing regime is rectangular in shape. The Reynolds number, measured at the entrance of straight channel, ranges from 5 to 60. Grid independence is performed to minimize the influence of numerical diffusion on simulation results. The grid size is selected as 6 μm, which can be considered as optimal. The interdigital micromixers with straight downstream channels are designed and simulated. In order to achieve better mixing near the inner walls, uneven lamellae width of each species is applied to create a larger concentration gradient near the inner walls. The results show that the micromixer with uneven lamellar width is able to enhance the mixing near the inner walls. A new passive micromixer with the uneven interdigital inlets is also designed to improve the mixing efficiency at high Re. The simulation results show that this new micromixer has a mixing efficiency larger than 80%, and a maximum pressure drop of 2.7 KPa.

UR - http://www.scopus.com/inward/record.url?scp=77952838843&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952838843&partnerID=8YFLogxK

U2 - 10.1115/ICNMM2009-82076

DO - 10.1115/ICNMM2009-82076

M3 - Conference contribution

SN - 9780791843499

SP - 813

EP - 819

BT - Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009

ER -