Investigation of acoustic streaming patterns around oscillating sharp edges

Nitesh Nama; Po-Hsun Huang; Tony Jun Huang; Francesco Costanzo

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arXiv · 1402.4152

Investigation of acoustic streaming patterns around oscillating sharp edges

Nitesh Nama·Po-Hsun Huang·Tony Jun Huang·Francesco Costanzo

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Abstract

Oscillating sharp edges have been employed to achieve rapid and homogeneous mixing in microchannels using acoustic streaming. Here we use a perturbation approach to study the flow around oscillating sharp edges in a microchannel. This work extends prior experimental studies to numerically characterize the effect of various parameters on the acoustically induced flow. Our numerical results match well with the experimental results. We investigated multiple device parameters such as the tip angle, oscillation amplitude, and channel dimensions. Our results indicate that, due to the inherent nonlinearity of acoustic streaming, the channel dimensions could significantly impact the flow patterns and device performance.

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Nitesh Nama, Po-Hsun Huang, Tony Jun Huang, Francesco Costanzo. 2014-02-17. Investigation of acoustic streaming patterns around oscillating sharp edges. https://arxiv.org/abs/1402.4152

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