Title page for etd-0019116-111426


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URN etd-0019116-111426
Author Shih-yang Li
Author's Email Address No Public.
Statistics This thesis had been viewed 5352 times. Download 184 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2015
Semester 1
Degree Master
Type of Document
Language English
Title On Wall Velocity and Temperature Measurements in Convective Microchannel Flow via nPIV/ nPIT
Date of Defense 2016-01-13
Page Count 196
Keyword
  • RLIF
  • hydrophobic and hydrophilic surface
  • velocity slip
  • slip length
  • temperature jump
  • microchannel
  • nPIV/ nPIT
  • Abstract The study contains the experiment of the velocity and temperature field in convective micro-channel flow near the wall of 200 nm. Since there is no fundamental understanding of the flow in the micro/nano-scale, this study builds up the information about this area via the experiment and compares the result of the research to the traditional fluid mechanics and related research. In addition, the related equation can be established as well. Most analyses of micro-channel flow use the micro particle image velocimetry (μPIV) which is limited by the signal-to-noise ratio and the size of the nano fluorescent particle (100 nm). The study uses the theory of the evanescent wave and the nano scale particle to measure near-wall velocity field with an out-of-plane resolution on the order of O (100nm). The experiment combines the total internal reflection fluorescence microscope (TIRFM) and the existing system of μPIV to generate the nano particle image velocimetry (nPIV). The velocity profiles, near-wall shear rates, local friction factors and slip length at different surfaces (Non-OTS, BTS, OTS, and DTS coated surface) can be measured by nPIV. Besides, the phenomena of kapitza length and the temperature slip can be studied through the injection of the DI-water, Rhodamine B and Rhodamine 110 to the micro-channel, the measurement of the temperature field and the convective heat transfer coefficient, and the usage of the nano particle image thermometry (nPIT) and ratiometric laser induced fluorescence (RLIF).
    Advisory Committee
  • Ching-jeng Ho - chair
  • Chao-kuang Chen - co-chair
  • Shou-shing Hsieh - advisor
  • Files
  • etd-0019116-111426.pdf
  • Indicate in-campus at 2 year and off-campus access at 2 year.
    Date of Submission 2016-01-19

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