Mixing intensification using sound-driven micromixer with sharp edges

Strong acoustic streaming can be generated inside a microchannel near sharp-edge structures. In this study, three Sharp-Edge Acoustic Streaming (SEAS) micromixers with multiple sharp edge patterns actuated by piezoelectric transducers are investigated. Direct Numerical Simulation (DNS) is used to numerically solve the multi-physics phenomenon involving acoustics, fluid dynamics and mass transfer. Experiments carried out validate numerical results visualization, as well evaluate micromixing performance Iodide–Iodate Reactions. Influence of pattern (i.e. spacing between individual structures, number edges), channel throughput intensity studied. The shape flow streamlines first unveils interaction main flow, which shown key for mixing enhancement. Following this, an optimal structure found among mixers allows achieving decrease time from 0.28 s 0.03 s. Finally, comparison literature on passive confirms SEAS mixer in terms at low Reynolds flow.