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Consideration of obstacles number in designing passive micromixer for laminar mixing flow

Zulkarnain, Maizul Haffin and Ma'radzi, Ahmad Alabqari and Abdul Jamil, Muhammad Mahadi (2014) Consideration of obstacles number in designing passive micromixer for laminar mixing flow. In: International Conference on Science and Technology (lCSTlE) 2014, 17-18 September 2014, Pulau Pinang.


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Micromixer can be divided into two categories which are active micromixer and passive micromixer. Due to simple fabrication technology and easy implementation in a complex microfluidic system, obstacle based passive micromixer will be the focus in this work. A passive micromixer is depends on low Reynolds number and the channel geometry for mixing effectiveness. In this work, three designs of obstacle based Y-micromixer were designed and evaluated. The micromixers are Y shape with obstacle SAR technique micromixer, Y shape with internal rib micromixer, Y shape with zigzag obstacle micromixer, and Y shape with mirrored zigzag obstacle micromixer. These micromixers has 237pm channel length, 30pm inlet length, 900 between inlets ports, width and depth are 30pm each. The fluids used for mixing were blood which has 3.0 x 10-3 kglpms of viscosity and glycerin which has high viscosity than blood (1.49 x 10-3 kglpms). The fluids used to evaluate the differences in term of their visual performance based image's standard deviation by plotting the graph and mixing efficiency by calculation. Based on these evaluations, the Y shape with zigzag obstacle micromixers is the best micromixer design with the highest mixing efficiency of 100% at the outlet of the channel.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: passive micromixer; laminarflow; obstacle; low Reynold Number
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ836-935 Hydraulic machinery
Divisions: Faculty of Electrical and Electronic Engineering > Department of Electronic Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 13 Jan 2015 06:23
Last Modified: 13 Jan 2015 06:23
URI: http://eprints.uthm.edu.my/id/eprint/6143
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