대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제24권7호
  • /
  • Pages.1010-1019
  • /
  • 2000
  • /
  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지
DOI QR코드

DOI QR Code

액막형성을 고려한 분무-벽 상호작용에 대한 모델

Modeling of Spray-Wall Interactions Considering Liquid Film Formation

  • 이성혁 (중앙대학교 생산공학연구소) ;
  • 유홍선 (중앙대학교 공과대학 기계공학부)
  • 발행 : 2000.07.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The main purpose of this article is to propose and assess a new spray impingement model considering film formation, which is capable of describing the droplet distribution and film flows in direct injection diesel engines. The spray-wall interaction model includes several mathematical formulae, newly made by the energy conservation law and some experimental results. The model consists of three representative regimes, rebound, deposition and splash. In addition, the film flow is described in the present model by solving the continuity and momentum equations for film flows using the integral method. To assess the new spray impingement model, the calculated results using the new model are compared with several experimental data for the normally impinging diesel sprays. The film model is also validated through comparing film radius and thickness against experimental data. The results show that the new model is generally in better agreement with experimental data and acceptable for prediction of the film radius and thickness.

키워드

참고문헌

  1. Gonzalez, M.A., Borman, G.L. and Reitz, R.D., 1991, 'A Study of Diesel Cold Starting Using Both Cycle Analysis and Multidimensional Calculations,' SAE910180
  2. Naber, J.D. and Reitz, R.D., 1988, 'Modeling Engine Spray/Wall Impingement,' SAE880107
  3. Park, K., 1994, 'Development of a Non-Orthogonal-Grid Computer Code for the Optimization of Direct-Injection Diesel Engine Combustion Chamber Shapes,' Ph.D. Thesis, The University of Science and Technology in Manchester, UK
  4. Guerrassi, N. and Champoussin, J.C., 1996, 'Experimental Study and Modeling of Diesel Spray/Wall Impingement,' SAE960864
  5. Eckhause, J.E. and Reitz, R.D., 1995, 'Modeling Heat Transfer to Impinging Fuel Sprays in Direct-Injection Engines,' Atomization and Sprays, Vol. 5, pp. 213-242
  6. Wachterst, L.H., and Westerling, N.A.J., 1966, 'The Heat Transfer from a Hot Wall to Impinging Water Drops in the Spheroidal State,' Chemical Engineering Sciences, Vol. 21, pp.1047-1056 https://doi.org/10.1016/0009-2509(66)85100-X
  7. Naber, J.D. and Farrell, P.V., 1993, 'Hydrodynamics of Droplet Impingement on a Heated Surface,' SAE930919
  8. Senda, J., Kobayashi, M, Iwashita, S. and Fujimoto, H., 1994, 'Modeling of Diesel Spray Impingement on a Flat Wall,' SAE941894
  9. Bai, C. and Gosman, A.D., 1995, 'Development of Methodology for Spray Impingement Simulation,' SAE950283
  10. Stanton, D.W. and Rutland, C.J., 1998, 'Multi-Dimensional Modeling of Heat and Mass Transfer of Fuel Films Resulting from Impinging Sprays,' SAE980132
  11. Cossali, G.E., Coghe, A. and Marengo, M., 1997, 'The Impact of a Single Drop on a Wetted Solid Surface,' Experiments in Fluids, Vol. 22, pp.463-472 https://doi.org/10.1007/s003480050073
  12. Lee,S.H. and Ryou,H.S., 'Comparison of Spray/Wall Impingement Models with Experimental Data,' AIAA J. of Propulsion and Power,(in press)
  13. 김홍석, 성낙원, 1999, '액적 미립화 모델과 벽면 충돌 모델을 이용한 직접분사식 디젤 엔진의 분무 특성 고찰,' 한국자동차공학회논문집, Vol. 7, pp. 35-45
  14. Mundo, C., Sommerfeld, M. and Tropea, C., 1995, 'Droplet-Wall Collisions : Experimental Studies of the Deformation and Breakup Process,' Int. J. Multiphase Flow, Vol. 21, pp.151-173 https://doi.org/10.1016/0301-9322(94)00069-V
  15. Yarin, A.L. and Weiss, D.A., 1995, 'Impact of Drops on Solid Surfaces : Self-Similar Capillary Waves, and Splashing as a New Type of Kinematic Discontinuity,' J. of Fluid Mech.,Vol. 283, pp.141-173 https://doi.org/10.1017/S0022112095002266
  16. 이성혁, 1999, '벽에 충돌하는 디젤분무에 관한 모델 개발 및 열전달 해석,' 중앙대학교 박사학위 논문, 중앙대학교
  17. Nagaoka, M., Kawazoe, H. and Nomura, N., 1994, 'Modeling Fuel Spray Impingement on a Hot Wall for Gasoline Engines,' SAE940525
  18. Hong,K.B., Ryou, H.S., Lee, S.H., and Kang, K.G., 'On Modeling of Spray/Wall Interaction and Heat Transfer of Impinging Diesel Sprays,' Combustion Technologies for a Clean Environment, Energy, Combustion and the Environment Book Series, (in press)
  19. Siwon, B. and Ennaoui, M., 1991, 'Calculating Hydrodynamics Problem for a Liquid Film Flowing Radially on a Flat Horizontal Surface,' Int. J. Numerical Methods, Vol.13, pp.655-666 https://doi.org/10.1002/fld.1650130508
  20. Schrader, M., 1961, 'Trocknung Fuechter Ober-flachen mittels Warmluftstrahlen Stromungsforgange und Stoffubertragung,' VDI Forschungsheft, Vol. 27, pp. 486
  21. Dawson, D.A. and Trass, O., 1966, 'Mass Transfer in a Turbulent Radial Wall Jet,' Can. J. Chem. Eng., Vol. 44, pp. 121-129
  22. Dawson, D.A. and Trass, O., 1966, 'Mass Transfer in a Turbulent Radial Wall Jet,' Can. J. Chem. Eng., Vol. 44, pp. 121-129
  23. Reynolds, W.C., 1980, 'Modeling of Fluid Motions in Engines - an Introductory Overview, in Combustion Modeling in Reciprocating Engines,' ed. J.N. Mattavi and C.A. Amann, Plenum Press, NY
  24. Reitz, R.D. and Diwakar, R., 1987, 'Structure of High-Pressure Fuel Sprays,' SAE870598
  25. O'Rourke, P. J, 1981, 'Collective Drop Effects on Vaporizing Liquid Sprays,' Ph. D. Thesis, Princeton Univ
  26. Katsura, N., Saito, M., Senda, J. and Fujimoto, H., 1989, 'Characteristics of a Diesel Spray Impinging on a Flat Wall,' SAE890264
  27. Fujimoto, H., Senda, J., Nagae, M., Hashimoto, A., Saito, M. and Katsura, N., 1990, 'Characteristics of a Diesel Spray Impinging on a Flat Wall,' Proc. COMODIA 90 Int. Symposium on Diagnostics and Modeling of Combustion in I.C.Engines, Kyoto, Japan, pp.193-198
  28. Saito, A., Kawamura, K., Watanabe, S., Takahashi, T. and Tuzuki, N., 1993, 'Analysis of Impinging Spray Characteristics under High-Pressure Fuel Injection,' 일본기계학회논문집(B 편), 제 59 권, 제 566 호, pp. 356-361
  29. Arcoumanis, C. and Chang, J-C, 1994, 'Flow and Heat Transfer Characteristics of Impinging Transient Diesel Sprays,' SAE940678