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Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers

Vortex flow increases the interface area of fluid streams by stretching along with providing continuous stirring action to the fluids in micromixers. In this study, experimental and numerical analyses on a design of micromixer that creates vortex flow were carried out, and the mixing performance was...

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Autores principales: Ansari, Mubashshir Ahmad, Kim, Kwang-Yong, Kim, Sun Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6187307/
https://www.ncbi.nlm.nih.gov/pubmed/30424137
http://dx.doi.org/10.3390/mi9050204
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author Ansari, Mubashshir Ahmad
Kim, Kwang-Yong
Kim, Sun Min
author_facet Ansari, Mubashshir Ahmad
Kim, Kwang-Yong
Kim, Sun Min
author_sort Ansari, Mubashshir Ahmad
collection PubMed
description Vortex flow increases the interface area of fluid streams by stretching along with providing continuous stirring action to the fluids in micromixers. In this study, experimental and numerical analyses on a design of micromixer that creates vortex flow were carried out, and the mixing performance was compared with a simple micro T-mixer. In the vortex micro T-mixer, the height of the inlet channels is half of the height of the main mixing channel. The inlet channel connects to the main mixing channel (micromixer) at the one end at an offset position in a fashion that creates vortex flow. In the simple micro T-mixer, the height of the inlet channels is equal to the height of the channel after connection (main mixing channel). Mixing of fluids and flow field have been analyzed for Reynolds numbers in a range from 1–80. The study has been further extended to planar serpentine microchannels, which were combined with a simple and a vortex T-junction, to evaluate and verify their mixing performances. The mixing performance of the vortex T-mixer is higher than the simple T-mixer and significantly increases with the Reynolds number. The design is promising for efficiently increasing mixing simply at the T-junction and can be applied to all micromixers.
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spelling pubmed-61873072018-11-01 Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers Ansari, Mubashshir Ahmad Kim, Kwang-Yong Kim, Sun Min Micromachines (Basel) Article Vortex flow increases the interface area of fluid streams by stretching along with providing continuous stirring action to the fluids in micromixers. In this study, experimental and numerical analyses on a design of micromixer that creates vortex flow were carried out, and the mixing performance was compared with a simple micro T-mixer. In the vortex micro T-mixer, the height of the inlet channels is half of the height of the main mixing channel. The inlet channel connects to the main mixing channel (micromixer) at the one end at an offset position in a fashion that creates vortex flow. In the simple micro T-mixer, the height of the inlet channels is equal to the height of the channel after connection (main mixing channel). Mixing of fluids and flow field have been analyzed for Reynolds numbers in a range from 1–80. The study has been further extended to planar serpentine microchannels, which were combined with a simple and a vortex T-junction, to evaluate and verify their mixing performances. The mixing performance of the vortex T-mixer is higher than the simple T-mixer and significantly increases with the Reynolds number. The design is promising for efficiently increasing mixing simply at the T-junction and can be applied to all micromixers. MDPI 2018-04-27 /pmc/articles/PMC6187307/ /pubmed/30424137 http://dx.doi.org/10.3390/mi9050204 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ansari, Mubashshir Ahmad
Kim, Kwang-Yong
Kim, Sun Min
Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers
title Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers
title_full Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers
title_fullStr Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers
title_full_unstemmed Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers
title_short Numerical and Experimental Study on Mixing Performances of Simple and Vortex Micro T-Mixers
title_sort numerical and experimental study on mixing performances of simple and vortex micro t-mixers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6187307/
https://www.ncbi.nlm.nih.gov/pubmed/30424137
http://dx.doi.org/10.3390/mi9050204
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