Journal of Advanced Marine Engineering and Technology

  • 제23권5호
  • /
  • Pages.662-670
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  • 1999
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
권호 표지

축대칭 엔진 실린더내의 유동장에 관한 수치적 연구

A Numerical Study on In-cylinder Flow Fields of an Axisymmetric Engine

  • 발행 : 1999.09.01
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초록

A numerical prediction was performed to clarify the air motion in the cylinder of an axisymmet-ric four-stroke reciprocating engine at its intake and compression stage. A scheme of finite volume method is used for the calculation. Modified $k-{\varepsilon}$ turbulence model is adopted and wall function is applied to the grids near the wall. The predicted mean velocity and rms velocity profiles showed a reasonable agreement with an available experimental data at its intake and compression stage. The predicted in-cylinder flow fields show that a strong turbulent twin vortex structure is pro-duced during induction but it commences to decay rapidly around inlet valve closure. The mean velocity continues to fall to a low level during compression but the turbulence intensity attains an approximate constant level.

키워드

참고문헌

  1. 한국박용기관학회 추계학술대회 논문집 박용 디젤기관의 배기과정중 실린더내 공기유동의 수치해석 임재문;최재성
  2. Imperial College of Science and Technology, DE82 019033 Calculations and Measurements of the Flow in a Motored Model Engine and Implications for Open-Chamber Direct-Injection Engines Ahmadi Befrui, B.;Arcoumanis, C.;Bicen, A. F.;Gosman, A. D.;Jahanbakhsh, A.;Whitelaw, J. H.
  3. 대한기계학회논문집 v.11 no.3 축대칭 왕복 엔진의 흡입 및 압축과정에서 유동 및 열전달의 수치해석 강신형;이창훈
  4. Third International Conference on Computers in Reciprocating Engines and Gas Turbine v.C499/005 Turbulents Flow Simulations in Model Reciprocating Engines with a Differential Stress Model Watkins, A. P.;Bo, T.;Lea, C. J.
  5. Combustion Modeling in Reciprocating Engines Modeling of Fluid Motions in Engines Reynolds, W. C.;Mattavi, J. N.(ed.);Amann, C. A.(ed.)
  6. International Journal for Numerical Methods in Fluids v.9 Assessment of variants of the κ-ε turbulence model for engine flow applications Ahmadi-Befrui, B.;Gosman, A. D.
  7. Journal of Fluids Engineering v.107 Steady and Unsteady Airflow Through the Intake Valve of a Reciprocating Engine Bicen, A. F.;Vafidis, C.;Whitelaw, J. H.
  8. Combustion Modeling in Reciprocating Engines The Generation of Turbulence in an Internal Combustion Engine Hoult, D. P.;Wong, V. W.;Mattavi, J. N.(ed.);Amann., C. A.(ed.)
  9. The Thermodynamics and Gas Dynamics of Internal Combustion Engine v.II Flow Processes in Cyliners Gosman, A. D.
  10. Journal of Fluids Engineering v.104 Measurements in a Motored Four-stroke Reciprocating Model Engine Arcoumanis, C.;Bicen, A. F.;Whitelaw, J. H.