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A NUMERICAL STUDY ON FLOW AND STIRRING CHARACTERISTICS IN A MICROCHANNEL WITH PERIODIC ARRAY OF CROSS BAFFLES  

Heo, S.G. (동아대학교 대학원 기계공학과)
Kang, S.M. (동아대학교 기계공학과)
Suh, Y.K. (동아대학교 기계공학과)
Publication Information
Journal of computational fluids engineering / v.11, no.4, 2006 , pp. 101-106 More about this Journal
Abstract
In the microfluidic devices the most important thing is mixing efficiency ol various fluids. In this study a newly designed miler is proposed to enhance the mixing effect with the purpose to apply it to microchannel mixing in a short future. This design is composed of a channel with cross baffles periodically arranged on the both bottom and top surfaces ol the channel. To obtain the yow patterns, the numerical computation was performed by using a commercial code, ANSYS CFX 10.0. To evaluate the mixing performance, we computed Lyapunov exponent and obtained Poincare sections. it was shown that our design provides the excellent mixing effect.
Keywords
Micro Mixer; Baffle; Poincare section; Lyapunov exponent; Chaotic advection; Numerical Computation;
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