Design and Analysis of a Passive Micromixer Based on Multiple Passages
We propose a novel passive micromixer based on multiple passages and analyze its mixing performance comprehensively. The multiple passages are constructed with straight channels, making them easier to manufacture, compared to conventional SAR micromixers and other micromixers based on curved channel...
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MDPI AG
2025-05-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/16/5/592 |
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| author | Makhsuda Juraeva Dong-Jin Kang |
| author_facet | Makhsuda Juraeva Dong-Jin Kang |
| author_sort | Makhsuda Juraeva |
| collection | DOAJ |
| description | We propose a novel passive micromixer based on multiple passages and analyze its mixing performance comprehensively. The multiple passages are constructed with straight channels, making them easier to manufacture, compared to conventional SAR micromixers and other micromixers based on curved channels. Its mixing performance has been demonstrated to be superior to that of the previous micromixers across a broad range of Reynolds numbers. Five distinct designs incorporating converging passages were explored to study the significance of the number of passages on the mixing performance. Across a broad range of Reynolds number ranges (0.1 to 80), the two-passage design significantly improved mixing performance, with a degree of mixing (DOM) consistently exceeding 0.84. Particularly, the mixing enhancement is prominent within the low and intermediate range of Reynolds numbers (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="normal">R</mi><mi mathvariant="normal">e</mi><mo>≤</mo><mn>20</mn><mo>)</mo></mrow></semantics></math></inline-formula>. This enhancement in the regime of molecular diffusion dominance stems from the elongated interface between the two fluids. The mixing enhancement in the transition regime is due to a secondary flow being generated on the cross-section normal to the main stream direction. The intensity of this secondary flow is significantly influenced by the number of multiple passages. The optimal number for the present micromixer design is two. The DOM remains almost constant for the submergence of multiple passages in the range of 40 to 70 (μm). |
| format | Article |
| id | doaj-art-0743ea1693d14d14962e27e6f5e70607 |
| institution | Kabale University |
| issn | 2072-666X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Micromachines |
| spelling | doaj-art-0743ea1693d14d14962e27e6f5e706072025-08-20T03:47:57ZengMDPI AGMicromachines2072-666X2025-05-0116559210.3390/mi16050592Design and Analysis of a Passive Micromixer Based on Multiple PassagesMakhsuda Juraeva0Dong-Jin Kang1School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyoungsan 38541, Republic of KoreaSchool of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyoungsan 38541, Republic of KoreaWe propose a novel passive micromixer based on multiple passages and analyze its mixing performance comprehensively. The multiple passages are constructed with straight channels, making them easier to manufacture, compared to conventional SAR micromixers and other micromixers based on curved channels. Its mixing performance has been demonstrated to be superior to that of the previous micromixers across a broad range of Reynolds numbers. Five distinct designs incorporating converging passages were explored to study the significance of the number of passages on the mixing performance. Across a broad range of Reynolds number ranges (0.1 to 80), the two-passage design significantly improved mixing performance, with a degree of mixing (DOM) consistently exceeding 0.84. Particularly, the mixing enhancement is prominent within the low and intermediate range of Reynolds numbers (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="normal">R</mi><mi mathvariant="normal">e</mi><mo>≤</mo><mn>20</mn><mo>)</mo></mrow></semantics></math></inline-formula>. This enhancement in the regime of molecular diffusion dominance stems from the elongated interface between the two fluids. The mixing enhancement in the transition regime is due to a secondary flow being generated on the cross-section normal to the main stream direction. The intensity of this secondary flow is significantly influenced by the number of multiple passages. The optimal number for the present micromixer design is two. The DOM remains almost constant for the submergence of multiple passages in the range of 40 to 70 (μm).https://www.mdpi.com/2072-666X/16/5/592multiple passagesdegree of mixing (DOM)submergenceelongated interfacesecondary flow |
| spellingShingle | Makhsuda Juraeva Dong-Jin Kang Design and Analysis of a Passive Micromixer Based on Multiple Passages Micromachines multiple passages degree of mixing (DOM) submergence elongated interface secondary flow |
| title | Design and Analysis of a Passive Micromixer Based on Multiple Passages |
| title_full | Design and Analysis of a Passive Micromixer Based on Multiple Passages |
| title_fullStr | Design and Analysis of a Passive Micromixer Based on Multiple Passages |
| title_full_unstemmed | Design and Analysis of a Passive Micromixer Based on Multiple Passages |
| title_short | Design and Analysis of a Passive Micromixer Based on Multiple Passages |
| title_sort | design and analysis of a passive micromixer based on multiple passages |
| topic | multiple passages degree of mixing (DOM) submergence elongated interface secondary flow |
| url | https://www.mdpi.com/2072-666X/16/5/592 |
| work_keys_str_mv | AT makhsudajuraeva designandanalysisofapassivemicromixerbasedonmultiplepassages AT dongjinkang designandanalysisofapassivemicromixerbasedonmultiplepassages |