Title page for etd-0722109-170946


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URN etd-0722109-170946
Author Jyun-wei Lin
Author's Email Address No Public.
Statistics This thesis had been viewed 5365 times. Download 1673 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2008
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Mixing Efficiency of Y-type Mixer with Joule Heating Effect
Date of Defense 2009-07-02
Page Count 95
Keyword
  • Micromixer
  • Mixing angle
  • Joule heating
  • μPIV and μLIF measurements
  • Abstract This study proposed a Y-type mixer which was driven by electroosmotic flow (Ex = 5 - 25 kV/m) with 7 different mixing angles (30°, 60°, 90°, 120°, -120°, -90°, -60°) to enhance mixing efficiency . The mixing performance of the device was demonstrated by using micro laser-induced fluorescence (μLIF) technology to quantify the concentration distribution in the microchannel. Also, micro particle image velocimetry (μPIV) was used for velocity measurements and analysis. It was found that the negative mixing angle could induce larger dead zone area than the positive one. The joule heating effect was found when electric field strength was larger than 15 kV/m. The combined dead zone and joule heating effect could enhance the mixing performance slightly. Although it has only a marginal effect on the mixing length for the positive mixing angles. Negative mixing angles allow a reduction of mixer size, which means a more efficient use of material and space. Finally, the best mixing angle was found to be -60°.
    Advisory Committee
  • Ching-Jeng Ho - chair
  • Chin-Chia Su - co-chair
  • Shou-Shing Hsieh - advisor
  • Files
  • etd-0722109-170946.pdf
  • indicate access worldwide
    Date of Submission 2009-07-22

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