Impacts of channel wall twisting on the mixing enhancement of a novel spiral micromixer
| Autor: | Dariush Bahrami, Morteza Bayareh |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Pressure drop
Materials science Microchannel General Chemical Engineering Mixing (process engineering) Micromixer Reynolds number Laminar flow General Chemistry Mechanics Biochemistry Industrial and Manufacturing Engineering Computer Science::Other Physics::Fluid Dynamics symbols.namesake Mass transfer Materials Chemistry symbols Spiral |
| Zdroj: | Chemical Papers. 76:465-476 |
| ISSN: | 2585-7290 0366-6352 |
| Popis: | Micromixer is one of the most widely used components in microfluidic systems to homogenize species or reactants in medical diagnostic processes, DNA, biochemistry, chemical processes, etc. Achieving fast and efficient mixing has always been difficult due to the difficulty of mass transfer in the laminar flow regime. In the present study, a novel micromixer is proposed using the simultaneous impacts of twisted wall and plane spiral microchannel, making the mixer to be efficient at low and high Reynolds numbers. The present simulations are performed using the finite difference method and ANSYS FLUENT 2021 software. It is shown that for a given Reynolds number, the mixing efficiency of the proposed micromixer is 53% higher than that of a T-shaped twisted microchannel and 51% higher than that of a plane spiral one. The mixing efficiency of a ¾ loop of the twisted-spiral microchannel is 7.51% higher than one and a half loops of a plane spiral channel. The proposed microchannel provides a 35% improvement in the mixing quality while the pressure drop is enhanced by less than 0.5%. |
| Databáze: | OpenAIRE |
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