Streaming-enhanced flow-mediated transport
Streaming-enhanced flow-mediated transport
复制标题
流媒体增强的流介导传输
DOI:
10.1017/jfm.2019.643
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发表时间:
2019
影响因子:
3.7
通讯作者:
Gazzola, Mattia
中科院分区:
文献类型:
--
作者:
Parthasarathy, Tejaswin;Chan, Fan Kiat;Gazzola, Mattia
We investigate the ability of an active body (master) to manipulate a passive object (slave) purely via contactless flow-mediated mechanisms, motivated by potential applications in microfluidic devices and medicine (drug delivery purposes). We extend prior works on active–passive cylinder pairs by superimposing periodic oscillations to the master’s linear motion. In a viscous fluid, such oscillations produce an additional viscous streaming field, which is leveraged for enhancing slave transport. We see that superimposing oscillations robustly improves transport across a range of Reynolds numbers. Comparison with results without oscillations highlights the flow mechanisms at work, which we capitalize on to design (master) geometries for augmented transport. These principles are found to extend to three-dimensional active–passive shapes as well.
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