Numerical study on mixing of two fluids with modified Tesla structure

Shakhawat Hossain; Mubashshir Ahmad Ansari; Afzal Husain; Kwang Yong Kim

doi:10.1115/MNHMT2009-18117

Numerical study on mixing of two fluids with modified Tesla structure

Shakhawat Hossain^*, Mubashshir Ahmad Ansari, Afzal Husain, Kwang Yong Kim

^*Corresponding author for this work

Mechanical and Industrial Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this study, a parametric investigation on mixing of two fluids in a modified Tesla microchannel, has been preformed. Modified Tesla micromixer applies both flow separation and vortices string principles to enhance the mixing. The fluid stream splits into two sub-streams and one of them mixes with the other again at the exit of the Tesla unit. Analyses of mixing and flow field have been carried out for a wide range of Reynolds number from 0.05 to 40. Mixing performance and pressure drop characteristics with two geometrical parameters, i.e, ratio of the diffuser gap to channel width (h/w) and ratio of the curved gap to the channel width (s/w), have been analyzed at six different Reynolds numbers. The vortical structure of the flow has been analyzed to explain mixing performance. The sensitivity analysis reveals that mixing is more sensitive s/w, than the h/w.

Original language	English
Title of host publication	Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Pages	41-45
Number of pages	5
Volume	1
DOIs	https://doi.org/10.1115/MNHMT2009-18117
Publication status	Published - 2010
Event	ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009 - Shanghai, China Duration: Dec 18 2009 → Dec 21 2009

Other

Other	ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Country	China
City	Shanghai
Period	12/18/09 → 12/21/09

Keywords

Coanda effect
Microchannel
Mixing index
Tesla micromixer

ASJC Scopus subject areas

Fluid Flow and Transfer Processes

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10.1115/MNHMT2009-18117

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Cite this

Hossain, S, Ansari, MA, Husain, A & Kim, KY 2010, Numerical study on mixing of two fluids with modified Tesla structure. in Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009. vol. 1, pp. 41-45, ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009, Shanghai, China, 12/18/09. https://doi.org/10.1115/MNHMT2009-18117

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abstract = "In this study, a parametric investigation on mixing of two fluids in a modified Tesla microchannel, has been preformed. Modified Tesla micromixer applies both flow separation and vortices string principles to enhance the mixing. The fluid stream splits into two sub-streams and one of them mixes with the other again at the exit of the Tesla unit. Analyses of mixing and flow field have been carried out for a wide range of Reynolds number from 0.05 to 40. Mixing performance and pressure drop characteristics with two geometrical parameters, i.e, ratio of the diffuser gap to channel width (h/w) and ratio of the curved gap to the channel width (s/w), have been analyzed at six different Reynolds numbers. The vortical structure of the flow has been analyzed to explain mixing performance. The sensitivity analysis reveals that mixing is more sensitive s/w, than the h/w.",

keywords = "Coanda effect, Microchannel, Mixing index, Tesla micromixer",

author = "Shakhawat Hossain and Ansari, {Mubashshir Ahmad} and Afzal Husain and Kim, {Kwang Yong}",

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AU - Hossain, Shakhawat

AU - Ansari, Mubashshir Ahmad

AU - Husain, Afzal

AU - Kim, Kwang Yong

PY - 2010

Y1 - 2010

N2 - In this study, a parametric investigation on mixing of two fluids in a modified Tesla microchannel, has been preformed. Modified Tesla micromixer applies both flow separation and vortices string principles to enhance the mixing. The fluid stream splits into two sub-streams and one of them mixes with the other again at the exit of the Tesla unit. Analyses of mixing and flow field have been carried out for a wide range of Reynolds number from 0.05 to 40. Mixing performance and pressure drop characteristics with two geometrical parameters, i.e, ratio of the diffuser gap to channel width (h/w) and ratio of the curved gap to the channel width (s/w), have been analyzed at six different Reynolds numbers. The vortical structure of the flow has been analyzed to explain mixing performance. The sensitivity analysis reveals that mixing is more sensitive s/w, than the h/w.

AB - In this study, a parametric investigation on mixing of two fluids in a modified Tesla microchannel, has been preformed. Modified Tesla micromixer applies both flow separation and vortices string principles to enhance the mixing. The fluid stream splits into two sub-streams and one of them mixes with the other again at the exit of the Tesla unit. Analyses of mixing and flow field have been carried out for a wide range of Reynolds number from 0.05 to 40. Mixing performance and pressure drop characteristics with two geometrical parameters, i.e, ratio of the diffuser gap to channel width (h/w) and ratio of the curved gap to the channel width (s/w), have been analyzed at six different Reynolds numbers. The vortical structure of the flow has been analyzed to explain mixing performance. The sensitivity analysis reveals that mixing is more sensitive s/w, than the h/w.

KW - Coanda effect

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KW - Mixing index

KW - Tesla micromixer

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