Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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An Investigation of Methanol and Methanol Blended Sprays Using Laser Scattering Images

  • Park, Wook (Chonnam National University, Dept. of Mechanical Engineering) ;
  • Park, Byung-Chul (Chonnam National University, Dept. of Mechanical Engineering)
  • Published : 2001.12.01
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Abstract

The characteristics of methanol and methanol blended (M85) sprays were investigated under atmospheric conditions at various temperature, ranging from on-vaporizing to vaporizing ambient conditions (298∼353 K). From laser scattering images, the macroscopic characteristics of the spray, such as the spray tip penetration and the spray angle, were determined. Entropy concept was introduced to represent homogeneity and PIV analysis was adopted to determine the fluid dynamic information at each location of the spray. The correlation between entropy and vorticity strength enabled us to find their relations. The effect of ambient composition, mainly of viscous effect as affected by CO$_2$levels, was investigated using PIV and entropy analysis. Spray width and entropy value were found to tend to decrease at increased CO$_2$levels.

Keywords

References

  1. Adrian Bejan, 1994, Convection Heat Transfer, John Wiley & Sons, Inc. , pp 603-604
  2. Kazuyoshi, N., Hiromi, N., Kakuro, K. and Daijiro, H., 1989, 'Development of Ultrasonic Atomizer and its Application to S. I. Engines,' SAE Paper 890430
  3. Kim, Y. K., Iwai, N., Suto, H. and Tsuraga, T., 1980, 'Improvement of Alcohol Engine Performance by Flash Boiling Injection,' JSAE Review, Vol. 2, pp. 81-86
  4. Kondo, T., Chikahisa, T. and l-lishinuma, Y., 1999, 'Turbulent Mixing for Effective Soot Reduction during Combustion Process,' The 15th Internal Combustion Engine Sympo. (Int.)
  5. Lee, N. H., Park, J. R. and Choi, K. R., 1999, 'A Study on FlleJ Spray of Spark-Ignited Direct Injection Engine Using Laser Image Technology,' KSME Int. Journal, Vol. 13, No.1
  6. Lee, S. H., Shin, Y. K. and Hwang, S. S., 'Experimental Study on the Improvement of Cold Startability of Methanol (M85) Fueled Engine,' Journal of KSAE, Vol. 14, No.3
  7. Michael, Z. and Eran S., 1996, 'Fuel Atomization by Flashing of a Volatile Liquid in a Liquid Jet,' SAE Paper 960111
  8. Miko, F. and Buoyan Xu, 1992, 'Spray Characteristics of Methanol-Gasoline Blends Using Ultrasonic Atomizer,' SAE Paper 922353
  9. Suga, T, Kitajima, S, Kobayashi, Y, Nagashima, T, Sato, K. and Inudo, N., 1990, 'Development of Methanol Vehicles,' HONDA R&D Technical Review , Vol. 2, pp. 100-110
  10. Yuyama, R., Chikahisa, T. and Hishinuma, Y., 2000, 'Microscopic Diffusion Phenomena and Air Entrainment into Turbulent Jets,' The] 6th Internal Combustion Engine Sympo. (Int.)