Numerical investigating of micro-beam based active micromixer

The mixing process at the microscale is a complex challenge in microfluidic science leading to longermicrochannels. In this study, a microbeam based micromixer was investigated. The study wasconducted numerically in COMSOL Multiphysics v۵.۶. Notably, varying the frequency from ۰ to ۲۱Hz, the MI of the micromixer has raised from ۷۲% to ۹۸%. Furthermore, elevating the input flowvelocity from ۱ mm/s to ۱۰۰ mm/s resulted in a decrease in the mixing index at the specifiedfrequency of ۷ Hz from ۹۲% to ۸۳%, respectively, indicating the adverse impact of flow velocityincrement on the mixing index owing to the decrease in retention time. The results showed that theoscillation of the microbeam is the main element of mixing in this micromixer and increasing theoscillation frequency of this microbeam has a significant positive effect on the mixing index.

کلیدواژه ها:

Fluid Flow ، Microbeam ، Microfluidics ، Micromixer ، Numerical study