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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

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

References

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  2. 전산유체해석을 통한 RE엔진 흡기포트의 개발 vol.14, pp.6, 2008, https://doi.org/10.5762/kais.2013.14.6.2575