Topology Optimization Design of a Passive Two-Dimensional Micromixer

In this study, a novel two-dimensional micromixer design is proposed using the topology optimization method. The pressure drop constraint is introduced to achieve a limited pressure drop. The mixing performance of the proposed micromixer is evaluated over a broad range of Reynolds numbers (Re) through numerical simulations and experiments. The results showed that the mixing efficiency of the one-period and multi-period micromixers could reach 96% and 99%, respectively, while still maintaining a relatively low pressure drop. In addition, the experiment on the preparation of silver nanoparticles demonstrate the applicability and practicality of using topology optimization in the design of micromixers.