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The effect of sharp-edge acoustic streaming on mixing in a microchannel

Abstract : Strong Acoustic Streaming (AS) in a liquid can be generated near sharp-edge structures inside a microchannel. In this study, an experimental setup containing a Y-mixer and a sharp-edge patterned microchannel excited by a piezo-transducer is built. Based on visualisation and Iodide-Iodate Reactions, both macro-and micro-mixing performance are investigated. Results show that acoustic streaming allows a decrease of micromixing time from 0.3 s to 0.04 s. Meanwhile, the mixing enhancement by AS is very sensitive to the channel throughput, as the residence time becomes shorter at higher flowrates.
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Contributor : Xiaofeng Guo <>
Submitted on : Wednesday, September 23, 2020 - 9:54:59 AM
Last modification on : Friday, February 5, 2021 - 3:32:00 AM
Long-term archiving on: : Wednesday, December 2, 2020 - 11:58:20 AM


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Chuanyu Zhang, Xiaofeng Guo, Philippe Brunet, Laurent Royon. The effect of sharp-edge acoustic streaming on mixing in a microchannel. Annales de congrès SFT 2020, 2020, ⟨10.25855/SFT2020-041⟩. ⟨hal-02908146⟩



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