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The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer

In order to investigate the influence of the unit junction on the micromixer performance, a repetitive structure micromixer with a total length of 12.3 mm was proposed. This micromixer consists of a T-shape inlet channel and six cubic mixing units, as well as junctions between them. Numerical simula...

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Detalles Bibliográficos
Autores principales: Zhang, He, Yang, Shuang, Chuai, Rongyan, Li, Xin, Mu, Xinyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8955631/
https://www.ncbi.nlm.nih.gov/pubmed/35334676
http://dx.doi.org/10.3390/mi13030384
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author Zhang, He
Yang, Shuang
Chuai, Rongyan
Li, Xin
Mu, Xinyu
author_facet Zhang, He
Yang, Shuang
Chuai, Rongyan
Li, Xin
Mu, Xinyu
author_sort Zhang, He
collection PubMed
description In order to investigate the influence of the unit junction on the micromixer performance, a repetitive structure micromixer with a total length of 12.3 mm was proposed. This micromixer consists of a T-shape inlet channel and six cubic mixing units, as well as junctions between them. Numerical simulations show that, when the junctions are all located at the geometric center of the cubic mixing unit, the outlet mixing index is 72.12%. At the same flow velocity, the best mixing index achieved 97.15% and was increased by 34.68% when the junctions were located at different corners of the cubic mixing unit. The improvement in the mixing index illustrated that the non-equilibrium vortexes generated by changing the junction location to utilize the restricted diffusion by the mixing unit’s side wall could promote mixing. Visual tests of the micromixer chip prepared by 3D printing were consistent with the simulation results, also indicating that the junction location had a significant influence on the mixer’s performance. This article provides a new idea for optimizing the structural design and improving the performance of micromixers.
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spelling pubmed-89556312022-03-26 The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer Zhang, He Yang, Shuang Chuai, Rongyan Li, Xin Mu, Xinyu Micromachines (Basel) Article In order to investigate the influence of the unit junction on the micromixer performance, a repetitive structure micromixer with a total length of 12.3 mm was proposed. This micromixer consists of a T-shape inlet channel and six cubic mixing units, as well as junctions between them. Numerical simulations show that, when the junctions are all located at the geometric center of the cubic mixing unit, the outlet mixing index is 72.12%. At the same flow velocity, the best mixing index achieved 97.15% and was increased by 34.68% when the junctions were located at different corners of the cubic mixing unit. The improvement in the mixing index illustrated that the non-equilibrium vortexes generated by changing the junction location to utilize the restricted diffusion by the mixing unit’s side wall could promote mixing. Visual tests of the micromixer chip prepared by 3D printing were consistent with the simulation results, also indicating that the junction location had a significant influence on the mixer’s performance. This article provides a new idea for optimizing the structural design and improving the performance of micromixers. MDPI 2022-02-27 /pmc/articles/PMC8955631/ /pubmed/35334676 http://dx.doi.org/10.3390/mi13030384 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, He
Yang, Shuang
Chuai, Rongyan
Li, Xin
Mu, Xinyu
The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer
title The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer
title_full The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer
title_fullStr The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer
title_full_unstemmed The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer
title_short The Influence of the Unit Junction on the Performance of a Repetitive Structure Micromixer
title_sort influence of the unit junction on the performance of a repetitive structure micromixer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8955631/
https://www.ncbi.nlm.nih.gov/pubmed/35334676
http://dx.doi.org/10.3390/mi13030384
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