A SAR Micromixer for Water-Water Mixing: Design, Optimization, and Analysis
A numerical investigation of the mixing performance and fluid flow in a new split and recombine (SAR) <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mfenced><mrow><mi mathvariant="nor...
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| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/799bb8ce944d4bacb05849b04fc49387 |
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| Sumario: | A numerical investigation of the mixing performance and fluid flow in a new split and recombine (SAR) <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mfenced><mrow><mi mathvariant="normal">Y</mi><mo>−</mo><mi mathvariant="normal">U</mi></mrow></mfenced></mrow></semantics></math></inline-formula><i><sub>β</sub></i> micromixer is presented in this work. A parameter called connecting angle βis varied from 0° to 90° to analyze the effect on the SAR process and mixing performance. Thenumerical data shows that the SAR process strongly depends on the connecting angle (<i>β</i>) and maximum efficiency (93%) can be achieved when the value of β is 45°. The <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mfenced><mrow><mi mathvariant="normal">Y</mi><mo>−</mo><mi mathvariant="normal">U</mi></mrow></mfenced></mrow></semantics></math></inline-formula><sub>45°</sub> the mixer also offers higher efficiency and lower pressure drop than a known SAR ‘<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>H</mi><mo>−</mo><mi>C</mi></mrow></semantics></math></inline-formula>’ mixer irrespective of Reynolds numbers. The split and recombine process, the influence of secondary flow, and pressure drop characteristics at various Reynolds numbers are also studied. In addition, mixing effectiveness is also computed, and among all examined mixers, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mfenced><mrow><mi mathvariant="normal">Y</mi><mo>−</mo><mi mathvariant="normal">U</mi></mrow></mfenced></mrow></semantics></math></inline-formula><sub>45°</sub> is by far the best performing one. |
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