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Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer

In this work, a numerical investigation was analyzed to exhibit the mixing behaviors of non-Newtonian shear-thinning fluids in Kenics micromixers. The numerical analysis was performed using the computational fluid dynamic (CFD) tool to solve 3D Navier-Stokes equations with the species transport equa...

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Autores principales: Mahammedi, Abdelkader, Tayeb, Naas Toufik, Kim, Kwang-Yong, Hossain, Shakhawat
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708029/
https://www.ncbi.nlm.nih.gov/pubmed/34945343
http://dx.doi.org/10.3390/mi12121494
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author Mahammedi, Abdelkader
Tayeb, Naas Toufik
Kim, Kwang-Yong
Hossain, Shakhawat
author_facet Mahammedi, Abdelkader
Tayeb, Naas Toufik
Kim, Kwang-Yong
Hossain, Shakhawat
author_sort Mahammedi, Abdelkader
collection PubMed
description In this work, a numerical investigation was analyzed to exhibit the mixing behaviors of non-Newtonian shear-thinning fluids in Kenics micromixers. The numerical analysis was performed using the computational fluid dynamic (CFD) tool to solve 3D Navier-Stokes equations with the species transport equations. The efficiency of mixing is estimated by the calculation of the mixing index for different cases of Reynolds number. The geometry of micro Kenics collected with a series of six helical elements twisted 180° and arranged alternately to achieve the higher level of chaotic mixing, inside a pipe with a Y-inlet. Under a wide range of Reynolds numbers between 0.1 to 500 and the carboxymethyl cellulose (CMC) solutions with power-law indices among 1 to 0.49, the micro-Kenics proves high mixing Performances at low and high Reynolds number. Moreover the pressure losses of the shear-thinning fluids for different Reynolds numbers was validated and represented.
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spelling pubmed-87080292021-12-25 Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer Mahammedi, Abdelkader Tayeb, Naas Toufik Kim, Kwang-Yong Hossain, Shakhawat Micromachines (Basel) Article In this work, a numerical investigation was analyzed to exhibit the mixing behaviors of non-Newtonian shear-thinning fluids in Kenics micromixers. The numerical analysis was performed using the computational fluid dynamic (CFD) tool to solve 3D Navier-Stokes equations with the species transport equations. The efficiency of mixing is estimated by the calculation of the mixing index for different cases of Reynolds number. The geometry of micro Kenics collected with a series of six helical elements twisted 180° and arranged alternately to achieve the higher level of chaotic mixing, inside a pipe with a Y-inlet. Under a wide range of Reynolds numbers between 0.1 to 500 and the carboxymethyl cellulose (CMC) solutions with power-law indices among 1 to 0.49, the micro-Kenics proves high mixing Performances at low and high Reynolds number. Moreover the pressure losses of the shear-thinning fluids for different Reynolds numbers was validated and represented. MDPI 2021-11-30 /pmc/articles/PMC8708029/ /pubmed/34945343 http://dx.doi.org/10.3390/mi12121494 Text en © 2021 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
Mahammedi, Abdelkader
Tayeb, Naas Toufik
Kim, Kwang-Yong
Hossain, Shakhawat
Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer
title Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer
title_full Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer
title_fullStr Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer
title_full_unstemmed Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer
title_short Mixing Enhancement of Non-Newtonian Shear-Thinning Fluid for a Kenics Micromixer
title_sort mixing enhancement of non-newtonian shear-thinning fluid for a kenics micromixer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708029/
https://www.ncbi.nlm.nih.gov/pubmed/34945343
http://dx.doi.org/10.3390/mi12121494
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