한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제10권1호
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  • Pages.34-39
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  • 2012
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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마이크로 레이저 형광 여기법을 이용한 미세채널 내부에서의 산소 확산에 대한 정량적 가시화

Quantitative Visualization of Oxygen Transfer in Micro-channel using Micro-LIF Technique

  • 천쥐안 (부산대학교 일반대학원 기계공학과) ;
  • 김현동 (부산대학교 일반대학원 기계공학과) ;
  • 김경천 (부산대학교 기계공학부)
  • 투고 : 2012.03.19
  • 심사 : 2012.03.30
  • 발행 : 2012.04.30
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초록

In the present study, oxygen transfer process across gas-liquid interface in a Y-shape micro-channel is quantitatively visualized using the micro laser induced fluorescence (${\mu}$-LIF) technique. Diffusion coefficient of Oxygen ($D_L$) is estimated based on the experimental results and compared to its theoretical value. Tris ruthenium (II) chloride hexahydrate was used as the oxygen quenchable fluorescent dye. A light-emitting diode (LED) with wavelength of 450 nm was used as the light source and phosphorescence images of fluorescent dye were captured by a CMOS high speed camera installed on the microscope system. Water having dissolved oxygen (DO) value of 0% and pure oxygen gas were injected into the Y-shaped microchannel by using a double loading syringe pump. In-situ pixel-by-pixel calibration was carried out to obtain Stern-Volmer plots over whole flow field. Instantaneous DO concentration fields were successfully mapped according to Stern-Volmer plots and DL was calculated as $2.0675{\times}10^{-9}\;m^2/s$.

키워드

참고문헌

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피인용 문헌

  1. Visualization of oxygen distribution on leaf surfaces using VisiSens oxygen planar optode system vol.14, pp.1, 2016, https://doi.org/10.5407/JKSV.2016.14.1.051