Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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A Numerical Study on the Characteristics of Tumble and Internal Flow According to Intake Port for Marine Engine

선박용 엔진의 흡기포트 형상에 따른 텀블 및 내부 유동 특성에 관한 수치적 연구

  • Published : 2008.05.31
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Abstract

Many researches have been studied on in-cylinder flow as one of dominant effects for an engine combustion. The combustion phenomena of reciprocating engine is one of the most important processes affecting performance and emissions. One effective way to improve the engine combustion is to control the motion of the charge inside a cylinder by means of optimum induction system design. It is believed that the tumble and swirl motion generated during intake breaks down into small-scale turbulence in the compression stroke of the cycle. However, the exact nature of their relationship is not well known. To know this relationship definitely, this paper describes analytical results of the tumble motion, swirl motion, turbulence intensity, turbulence inside the cylinder of marine engine. 3-D computation has been performed by using STAR-CD solver and es-ice.

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References

  1. David J. Timoney and William J. Smith, 'Influences of Fuel Injection and Air Motion Energy Sources on Fuel-Air Mixing Rates in a D.I. Diesel Combustion System', SAE Paper 960035
  2. Constantine A. Varnava and Dennis N. Assanis, 'The Effects of Spray, Mixing, and Combution Model Parameters on KIVA-II Predictions', SAE Paper 911785
  3. STAR-CD 3.26 CFD user's manual
  4. El Tahry, S.H., 'k-$\varepsilon$ equation for compressible reciprocating engine flows', AIAA, J.Energy, 7(4) pp. 345 - 353, 1983 https://doi.org/10.2514/3.48086
  5. Launder, B.E., and Spalding, D.B. 1974. 'The numerical computation of turbulent flows', Comp.Meth. in Appl, Mech. and Eng., 3, pp.269-289 https://doi.org/10.1016/0045-7825(74)90029-2
  6. Rodi, W. 1979. 'Influence of buoyancy and rotation on equations for the turbulent length scale', Proc. 2nd Symp. on Turbulent Shear Flows
  7. Reynolds, W.C. 'Modelling of Fluid Motions in Engines - An Introductory Overview', in J.N. Mattavi and C.A. Amann (eds.) Combustion Modelling in Reciprocating Engines, pp41-68, Plenum Press, 1980
  8. J.C.Kent, et al., 'Observations on the Effects of Intake Generated Swirl and Tumble on combustion Duration', SAE Paper 892096, 1989
  9. Philip W. Stephenson and Christopher J.Rutland, 'Modeling the Effects of Intake Flow Characteristics on Diesel Engine Combustion', SAE Paper 950282, 1995
  10. Fansler, T.D., 'Turbulence Production and Relaxation in Bowl-in-Piston Engine', SAE Paper 930479, 1993
  11. Jun-ichi Kawashima, Hiroshi Ogawa and Yoshiyuki Tsuru, 'Research on a Variable Swirl Intake Port for 4-Valve High-Speed DI Diesel Engines', SAE Paper 982680, 1998
  12. Alain Floch, Jean Van Frank, and Afif Ahmed, 'Comparison of the Effects of Intake-Generated Swirl and Tumble on Turbulence Characteristics in a 4-Valve Engine', SAE Paper 952457, 1995
  13. Kang Y. Huh, Chang Ryol Choi, and Jong Gyu Kim 'Flow Analysis of the Helical Intake Port and Cylinder of a Direct Injection Diesel Engine', SAE Paper 952069, 1995

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