کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
656069 1457672 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pumping and mixing in a microchannel using AC asymmetric electrode arrays
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Pumping and mixing in a microchannel using AC asymmetric electrode arrays
چکیده انگلیسی

A numerical study of electroosmotic microchannel flow driven by arrays of AC (alternating current) asymmetric electrodes was carried out. By installing asymmetric electrode arrays on the top and bottom walls of the microchannel, pumping and mixing flow modes can be generated. The ‘pumping mode’ (P) is generated when the sequences of asymmetric electrode pairs (narrow to wide) on the top and bottom walls are in phase, whereas the ‘mixing mode’ (M) is generated by switching the sequence of electrode pairs of the top wall (e.g., wide to narrow). By combining mixing and pumping modes, enhanced mixing performance can be achieved without significantly reducing the flow rate. Among various combinations of P and M modes, the alternating PM mode showed the best mixing performance due to the iterative convergent and divergent flow motions. The effects of Peclet number and channel height on the mixing efficiency were analyzed in detail.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Fluid Flow - Volume 29, Issue 1, February 2008, Pages 269–280
نویسندگان
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