Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic Micromixer
Three-dimensional numerical investigations of a novel passive micromixer were carried out to analyze the hydrodynamic and thermal behaviors of Nano-Non-Newtonian fluids. Mass and heat transfer characteristics of two heated fluids have been investigated to understand the quantitative and qualitative...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/13/6/933 |
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| author | Naas Toufik Tayeb Shakhawat Hossain Abid Hossain Khan Telha Mostefa Kwang-Yong Kim |
| author_facet | Naas Toufik Tayeb Shakhawat Hossain Abid Hossain Khan Telha Mostefa Kwang-Yong Kim |
| author_sort | Naas Toufik Tayeb |
| collection | DOAJ |
| description | Three-dimensional numerical investigations of a novel passive micromixer were carried out to analyze the hydrodynamic and thermal behaviors of Nano-Non-Newtonian fluids. Mass and heat transfer characteristics of two heated fluids have been investigated to understand the quantitative and qualitative fluid faction distributions with temperature homogenization. The effect of fluid behavior and different Al<sub>2</sub>O<sub>3</sub> nanoparticles concentrations on the pressure drop and thermal mixing performances were studied for different Reynolds number (from 0.1 to 25). The performance improvement simulation was conducted in intervals of various Nanoparticles concentrations (φ = 0 to 5%) with Power-law index (n) using CFD. The proposed micromixer displayed a mixing energy cost of 50–60 comparable to that achieved for a recent micromixer (2021y) in terms of fluid homogenization. The analysis exhibited that for high nanofluid concentrations, having a strong chaotic flow enhances significantly the hydrodynamic and thermal performances for all Reynolds numbers. The visualization of vortex core region of mass fraction and path lines presents that the proposed design exhibits a rapid thermal mixing rate that tends to 0.99%, and a mass fraction mixing rate of more than 0.93% with very low pressure losses, thus the proposed micromixer can be utilized to enhance homogenization in different Nano-Non-Newtonian mechanism with minimum energy. |
| first_indexed | 2024-03-09T23:00:46Z |
| format | Article |
| id | doaj.art-249e93585d2842b48bf857e78a539acb |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-09T23:00:46Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-249e93585d2842b48bf857e78a539acb2023-11-23T18:01:50ZengMDPI AGMicromachines2072-666X2022-06-0113693310.3390/mi13060933Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic MicromixerNaas Toufik Tayeb0Shakhawat Hossain1Abid Hossain Khan2Telha Mostefa3Kwang-Yong Kim4Gas Turbine Joint Research Team, University of Djelfa, Djelfa 17000, AlgeriaDepartment of Industrial and Production Engineering, Jashore University of Science and Technology, Jashore 7408, BangladeshInstitute of Nuclear Power Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, BangladeshMechanical Engineering Department, Ziane Achour University of Djelfa, Djelfa 17000, AlgeriaDepartment of Mechanical Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, KoreaThree-dimensional numerical investigations of a novel passive micromixer were carried out to analyze the hydrodynamic and thermal behaviors of Nano-Non-Newtonian fluids. Mass and heat transfer characteristics of two heated fluids have been investigated to understand the quantitative and qualitative fluid faction distributions with temperature homogenization. The effect of fluid behavior and different Al<sub>2</sub>O<sub>3</sub> nanoparticles concentrations on the pressure drop and thermal mixing performances were studied for different Reynolds number (from 0.1 to 25). The performance improvement simulation was conducted in intervals of various Nanoparticles concentrations (φ = 0 to 5%) with Power-law index (n) using CFD. The proposed micromixer displayed a mixing energy cost of 50–60 comparable to that achieved for a recent micromixer (2021y) in terms of fluid homogenization. The analysis exhibited that for high nanofluid concentrations, having a strong chaotic flow enhances significantly the hydrodynamic and thermal performances for all Reynolds numbers. The visualization of vortex core region of mass fraction and path lines presents that the proposed design exhibits a rapid thermal mixing rate that tends to 0.99%, and a mass fraction mixing rate of more than 0.93% with very low pressure losses, thus the proposed micromixer can be utilized to enhance homogenization in different Nano-Non-Newtonian mechanism with minimum energy.https://www.mdpi.com/2072-666X/13/6/933chaotic micromixerNano-Non-Newtonian fluidmass mixing indexthermal mixing indexlow generalized Reynolds numberminimal mixing energy cost |
| spellingShingle | Naas Toufik Tayeb Shakhawat Hossain Abid Hossain Khan Telha Mostefa Kwang-Yong Kim Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic Micromixer Micromachines chaotic micromixer Nano-Non-Newtonian fluid mass mixing index thermal mixing index low generalized Reynolds number minimal mixing energy cost |
| title | Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic Micromixer |
| title_full | Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic Micromixer |
| title_fullStr | Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic Micromixer |
| title_full_unstemmed | Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic Micromixer |
| title_short | Evaluation of Hydrodynamic and Thermal Behaviour of Non-Newtonian-Nanofluid Mixing in a Chaotic Micromixer |
| title_sort | evaluation of hydrodynamic and thermal behaviour of non newtonian nanofluid mixing in a chaotic micromixer |
| topic | chaotic micromixer Nano-Non-Newtonian fluid mass mixing index thermal mixing index low generalized Reynolds number minimal mixing energy cost |
| url | https://www.mdpi.com/2072-666X/13/6/933 |
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