Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive Micromixer
(1) Background: Microfluidic chips have found extensive applications in multiple fields due to their excellent analytical performance. As an important platform for micro-mixing, the performance of micromixers has a significant impact on analysis accuracy and rate. However, existing micromixers with...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/7/1414 |
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| author | Annan Xia Cheng Shen Chengfeng Wei Lingchen Meng Zhiwen Hu Luming Zhang Mengyue Chen Liang Li Ning He Xiuqing Hao |
| author_facet | Annan Xia Cheng Shen Chengfeng Wei Lingchen Meng Zhiwen Hu Luming Zhang Mengyue Chen Liang Li Ning He Xiuqing Hao |
| author_sort | Annan Xia |
| collection | DOAJ |
| description | (1) Background: Microfluidic chips have found extensive applications in multiple fields due to their excellent analytical performance. As an important platform for micro-mixing, the performance of micromixers has a significant impact on analysis accuracy and rate. However, existing micromixers with high mixing efficiency are accompanied by high pressure drop, which is not conducive to the integration of micro-reaction systems; (2) Methods: This paper proposed a novel “Tai Chi”-shaped planar passive micromixer with high efficiency and low pressure drop. The effect of different structural parameters was investigated, and an optimal structure was obtained. Simulations on the proposed micromixer and two other micromixers were carried out while mixing experiments on the proposed micromixer were performed. The experimental and simulation results were compared; (3) Results: The optimized values of the parameters were that the straight channel width <i>w</i>, ratio <i>K</i> of the outer and inner walls of the circular cavity, width ratio <i>w</i><sub>1</sub>/<i>w</i><sub>2</sub> of the arc channel, and number <i>N</i> of mixing units were 200 μm, 2.9, 1/2, and 6, respectively. Moreover, the excellent performance of the proposed micromixer was verified when compared with the other two micromixers; (4) Conclusions: The mixing efficiency <i>M</i> at all <i>Re</i> studied was more than 50%, and at most <i>Re</i>, the <i>M</i> was nearly 100%. Moreover, the pressure drop was less than 18,000 Pa. |
| first_indexed | 2024-03-11T00:48:45Z |
| format | Article |
| id | doaj.art-597494bd28074c45a1ce8d6627b0fa42 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-11T00:48:45Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-597494bd28074c45a1ce8d6627b0fa422023-11-18T20:33:06ZengMDPI AGMicromachines2072-666X2023-07-01147141410.3390/mi14071414Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive MicromixerAnnan Xia0Cheng Shen1Chengfeng Wei2Lingchen Meng3Zhiwen Hu4Luming Zhang5Mengyue Chen6Liang Li7Ning He8Xiuqing Hao9College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaBeijing Jingdiao Group, Beijing 102308, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China(1) Background: Microfluidic chips have found extensive applications in multiple fields due to their excellent analytical performance. As an important platform for micro-mixing, the performance of micromixers has a significant impact on analysis accuracy and rate. However, existing micromixers with high mixing efficiency are accompanied by high pressure drop, which is not conducive to the integration of micro-reaction systems; (2) Methods: This paper proposed a novel “Tai Chi”-shaped planar passive micromixer with high efficiency and low pressure drop. The effect of different structural parameters was investigated, and an optimal structure was obtained. Simulations on the proposed micromixer and two other micromixers were carried out while mixing experiments on the proposed micromixer were performed. The experimental and simulation results were compared; (3) Results: The optimized values of the parameters were that the straight channel width <i>w</i>, ratio <i>K</i> of the outer and inner walls of the circular cavity, width ratio <i>w</i><sub>1</sub>/<i>w</i><sub>2</sub> of the arc channel, and number <i>N</i> of mixing units were 200 μm, 2.9, 1/2, and 6, respectively. Moreover, the excellent performance of the proposed micromixer was verified when compared with the other two micromixers; (4) Conclusions: The mixing efficiency <i>M</i> at all <i>Re</i> studied was more than 50%, and at most <i>Re</i>, the <i>M</i> was nearly 100%. Moreover, the pressure drop was less than 18,000 Pa.https://www.mdpi.com/2072-666X/14/7/1414microfluidic chipsmixing efficiencypressure dropsimulationsexperiments |
| spellingShingle | Annan Xia Cheng Shen Chengfeng Wei Lingchen Meng Zhiwen Hu Luming Zhang Mengyue Chen Liang Li Ning He Xiuqing Hao Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive Micromixer Micromachines microfluidic chips mixing efficiency pressure drop simulations experiments |
| title | Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive Micromixer |
| title_full | Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive Micromixer |
| title_fullStr | Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive Micromixer |
| title_full_unstemmed | Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive Micromixer |
| title_short | Numerical and Experimental Investigation on a “Tai Chi”-Shaped Planar Passive Micromixer |
| title_sort | numerical and experimental investigation on a tai chi shaped planar passive micromixer |
| topic | microfluidic chips mixing efficiency pressure drop simulations experiments |
| url | https://www.mdpi.com/2072-666X/14/7/1414 |
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