Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Measurements on Transient Mixing Concentrations of Two Fuel Oils using a Quantitative Flow Visualization Technique

정량적 유동가시화 기술을 이용한 이종연료유 과도 혼합 농도분포 측정

  • Yum, Joo-Ho (Grad. School of Korea Maritime Univ.) ;
  • Doh, Deog-Hee (Division of Mechanical and Energy Systems Engineering, Korea Maritime Univ.) ;
  • Cho, Gyeong-Rae (Division of Mechanical and Energy Systems Engineering, Korea Maritime Univ.) ;
  • Min, Seong-Ki (Agency for Defense Development, The 1st R&D Institute-5) ;
  • Kim, Myung-Ho (Agency for Defense Development, The 1st R&D Institute-5) ;
  • Ryu, Gyong-Won (Agency for Defense Development, The 1st R&D Institute-5)
  • 염주호 (한국해양대학교 대학원) ;
  • 도덕희 (한국해양대학교 기계에너지시스템공학부) ;
  • 조경래 (한국해양대학교 기계에너지시스템공학부) ;
  • 민성기 (국방과학연구소 제1기술연구본부 5부) ;
  • 김명호 (국방과학연구소 제1기술연구본부 5부) ;
  • 유경원 (국방과학연구소 제1기술연구본부 5부)
  • Received : 2012.07.31
  • Accepted : 2012.08.24
  • Published : 2012.08.31
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Abstract

Transient mixing states of two different fuel oils, dimethylformamide (DMF) oil and JetA1 oil, were investigated by using a color image processing and a neural network. A tank ($D{\times}H$, $310{\times}370mm$) was filled with JetA1 oil. The DMF oil was filled at a top tank, and was mixed with the JetA1 oil in the tank mixing tank via a sudden opening which was performed by nitrogen gas with 1.9 bar. An impeller was rotated with 700 rpm for mixing enhancements of the two fuel oils. To visualize the mixing state of the DMF oil with the JetA1 oil, the DMF oil was coated with Rhodamine B whose color was red. A LCD monitor was used for uniform illumination. The color changes of the DMF oil were captured by a camcoder and the images were transferred to a host computer for quantifying the information of color changes. The color images of two mixed oils were captured with the camcoder. The R, G, B color information of the captured images was used to quantify the concentration of the DMF oil. To quantify the concentration of the DMF oil in the JetA1 oil, a calibration of color-to-concentration was carried out before the main experiment was done. Transient mixing states of DMF oil with the JetA1 oil since after the sudden infiltration were quantified and characterized with the constructed visualization technique.

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References

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