Static Micro-Mixing Analysis by Using Sequential Quadratic Programming and a Confocal Microscope
- Title
- Static Micro-Mixing Analysis by Using Sequential Quadratic Programming and a Confocal Microscope
- Author
- 이도형
- Keywords
- numerical simulation; channel flow; micro-mixing; confocal microscopy; neural network
- Issue Date
- 2008-03
- Publisher
- KOREAN PHYSICAL SOC
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v. 52, No. 3, Page. 580-587
- Abstract
- Molecular diffusion transport in a straight micro-channel has very little influence on mixing due to the extremely small length and velocity scales. As an alternative to a complex geometry, we propose a static-type micro-mixer with a concise configuration. This simpler geometry, but with careful design, achieves a less pressure drop but still allows a reasonably good mixing effect, which might be suitable for practical mass-production-type devices. In our research, the influence of the obstacles in a Y-channel type mixer on mixing was numerically and experimentally investigated by using precise nonlinear analysis. The layout and the size of the obstacles in a Y-channel micromixer were optimized to obtain the maximum possible mixing ratio by using sequential quadratic programming (SQP), a nonlinear approximate optimization technique. In the experimental setup, a Polydimethylsiloxane (PDMS) micro Y-channel was fabricated in which two DI water and ethanol working fluids passed by. A laser induced fluorescence (LIF) confocal microscope was adopted in order to determine the mixing ratio by using the fluorescence intensity of the flow using He/Ne laser scanner. This procedure could be easily extended as a guideline to the optimization of other types of static micro-mixers.
- URI
- http://www.jkps.or.kr/journal/view.html?volume=52&number=3&spage=580&year=2008https://repository.hanyang.ac.kr/handle/20.500.11754/80244
- ISSN
- 0374-4884
- DOI
- 10.3938/jkps.52.580
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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