Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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A Study of Numerical Analysis on Wall Impinging Spray

벽면충돌분무에 관한 수치해석

  • Yeom, Jeong-Kuk (Department of Mechanical Engineering, Dong-A University)
  • 염정국 (동아대학교 기계공학과)
  • Received : 2012.09.26
  • Accepted : 2013.02.19
  • Published : 2013.04.30
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Abstract

Phenomenon of droplet impingement with high temperature wall needs to be investigated because atomization process of droplet and cooling process of the wall by the impingement are very important in industry, thus studies concerned with temperature of piston wall have been conducted in spray characteristics analysis of diesel engine. Hence, in this study, we defined $DT_{sat}(=T_w-T_{sat})$ superheat degree of the wall by difference between $T_w$ considering surface temperature of piston in the actual engine and $T_{sat}$ saturation temperature of the fuel and then investigated spray behavior of wall impinging with variance of the boiling process. In this study, in order to analyze wall impingement of droplet in accordance with difference of boiling condition, calculational conditions were set as $DT_{sat}=40K$(nucleate boiling), $DT_{sat}=140K$(transition boiling), and $DT_{sat}=240K$(film boiling). As a result, it can be found that fuel vapor increases and droplet mass decreases in the order of the nucleate boiling, transition boiling, and film boiling.

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References

  1. J. Senda, T. Kanda, T. M. Al-Roub and P. V. Farrell, T. Fukami and H. Fujimoto, 1997, "Modeling Spray Impingement Considering Fuel Film Formation On the Wall", Journal of Society of Automotive Engineers, No. 970047.
  2. S. Furuhama and H. Suzuki, 1979, "Temperature Distribution of Piston Rings and Piston in High Speed Diesel Engine", Journal of The Japan Society of Mechanical Engineers(B), Vol. 22, No. 174, pp. 1788-1795(in Japanese). https://doi.org/10.1299/jsme1958.22.1788
  3. T. Murayama, 1969, "An Experimental Study on the Performance of a Multifuel Engine : Part3 An Attempt of M-Combustion Applied to a Swirl Chamber," Journal of The Japan Society of Mechanical Engineers(B), Vol. 35, No. 274, pp. 1310-1319(in Japanese). https://doi.org/10.1299/kikai1938.35.1310
  4. S. Kusano, 1997, "Analysis of the unsteady spray accompanying with change of phase", MS thesis, Doshisha University, Kyoto, Japan.
  5. T. Dan, 1996, "Turbulent structure and formation mechanism of diesel sprays", Ph. D. thesis, Doshisha University, Kyoto, Japan.
  6. T. Dan, S. Takagishi, J. Senda and H. Fujimoto, 1997, "Organized Structure and Motion in Diesel Spray", Journal of Society of Automotive Engineers, No. 970641.
  7. J. K. Yeom, 2009, "Study on the Behavior Characteristics of the Evaporative Diesel Spray under Change in Ambient Conditions", Journal of Korea Society of Mechanical Engineers(B) Vol. 33, No. 6 pp. 454-460. https://doi.org/10.3795/KSME-B.2009.33.6.454
  8. J. Senda, T. Kanda, S. Kusano and H. Fujimoto, 1999, "Modeling on Dispersion and Mixture Formation of spray Impinging on the Wall Considering Film Formation and Droplet-Film Interaction", Journal of The Japan Society of Mechanical Engineers(B), Vol. 65, No. 629, pp. 389-396(in Japanese).
  9. J. K. Yeom, 2010, "An Experimental Analysis on the Behavior Characteristics of Evaporative Impinging Spray," Journal of The Korean Society for Power System Engineering, Vol. 14. No. 2, pp.16-21.
  10. J. Senda, K. Yamada, H. Fujimoto and H. H. Miki, 1987, "The Heat Transfer Characteristics of a Small Droplet Impinging upon a Hot Surface", Journal of The Japan Society of Mechanical Engineers(B), Vol. 53, No. 485, pp. 176-182(in Japanese).
  11. J. Senda, K. Yamada, K. Takeuchi and H. Miki, 1986, "Deformation and Breakup Behavior of a Small Droplet Impinging upon a Hot Surface", Journal of The Japan Society of Mechanical Engineers(B), Vol. 52, No. 481, pp. 3372-3379(in Japanese).
  12. G. T. Sato, T. Suzuki and N. Tokuoka, 1985, "Experimental Study on the Behavior of the Drop Impinging upon a Hot Surface : 1st Report, Disintegration Patterns and Deformation of a Drop", Journal of The Japan Society of Mechanical Engineers(B), Vol. 51, No. 481, pp. 1703-1711(in Japanese).

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