Modelling of flows in micromixers |
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| Authors: | V Ya Rudyak A V Minakov A A Gavrilov and A A Dekterev |
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| Institution: | (2) Department of Mechanical and Automation Engineering, Da-Yeh University, Chung-Hua, Taiwan, ROC;(3) Department of Mechanical and Electromechanical Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC;(4) Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan, ROC; |
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| Abstract: | A method is proposed for modelling fluid flows in microchannels. The method is tested on the known experimental data on studying
the flows in microchannels with the aid of the micro-PIV. The flow regimes in micromixers of the Y- and T-types are studied. The passive and active mixers are considered. The dependence of the mixing efficiency on the Reynolds
and Péclet numbers as well as the possibility of using the hydrophobic and ultra-hydrophobic coatings are analysed. A T-mixer is proposed as an active technique of mixing, in which the flow rate in one of the inlet channels varied according
to the harmonic law. The dependence of the mixing efficiency on the frequency of the variation of the flow rate and its amplitude
is established. |
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