Browse > Article
http://dx.doi.org/10.5916/jkosme.2008.32.4.498

A Numerical Study on the Characteristics of Tumble and Internal Flow According to Intake Port for Marine Engine  

Lee, Byoung-Hwa (부산대학교 기계공학과)
Chang, Young-June (부산대학교 기계공학과)
Jeon, Chung-Hwan (부산대학교 기계공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.32, no.4, 2008 , pp. 498-505 More about this Journal
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.
Keywords
Tumble motion; Swirl motion; Intake port; Turbulence kinetic energy; Turbulence intensity; Turbulence length scale;
Citations & Related Records
연도 인용수 순위
  • Reference
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 J.C.Kent, et al., 'Observations on the Effects of Intake Generated Swirl and Tumble on combustion Duration', SAE Paper 892096, 1989
3 Fansler, T.D., 'Turbulence Production and Relaxation in Bowl-in-Piston Engine', SAE Paper 930479, 1993
4 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
5 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
6 Philip W. Stephenson and Christopher J.Rutland, 'Modeling the Effects of Intake Flow Characteristics on Diesel Engine Combustion', SAE Paper 950282, 1995
7 Rodi, W. 1979. 'Influence of buoyancy and rotation on equations for the turbulent length scale', Proc. 2nd Symp. on Turbulent Shear Flows
8 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
9 STAR-CD 3.26 CFD user's manual
10 Constantine A. Varnava and Dennis N. Assanis, 'The Effects of Spray, Mixing, and Combution Model Parameters on KIVA-II Predictions', SAE Paper 911785
11 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
12 El Tahry, S.H., 'k-$\varepsilon$ equation for compressible reciprocating engine flows', AIAA, J.Energy, 7(4) pp. 345 - 353, 1983   DOI   ScienceOn
13 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   DOI   ScienceOn