Three dimensional computation of transition to turbulence in a reciprocating engine

Ken Naitoh, Yasuo Takagi, Kunio Kuwahara, Egon Krause, Katsuya Ishii

研究成果: Conference contribution

5 引用 (Scopus)

抄録

A transition to turbulent flow in the compression process of a reciprocating engine is studied by obtaining the finite-difference numerical solutions to the governing Navier-Stokes equations without using explicit turbulence models. A computational method is developed under the assumption that the flow is in a low-subsonic regime with a strong compression. The numerical method is a simple extension of the well-known MAC method. Computations were performed for three different chamber-geometries under the engine speed of 1400 rpm. The present computational results provide convincing evidence to give a direct demonstration of the transient process in which large tumbling vortices break down into smaller sizes near the end of compression process. The present data are found to be in qualitative agreement with the experimental measurements by the Mach-Zehnder interferometry.

元の言語English
ホスト出版物のタイトルAIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989
出版者American Institute of Aeronautics and Astronautics Inc, AIAA
出版物ステータスPublished - 1989
外部発表Yes
イベントAIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989 - Buffalo, United States
継続期間: 1989 6 121989 6 14

Other

OtherAIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989
United States
Buffalo
期間89/6/1289/6/14

Fingerprint

piston engines
vortex breakdown
turbulence models
turbulent flow
Navier-Stokes equation
engines
interferometry
Turbulence
chambers
turbulence
Engines
Barreling
Computational methods
geometry
Turbulence models
Interferometry
Navier Stokes equations
Mach number
Turbulent flow
Numerical methods

ASJC Scopus subject areas

  • Aerospace Engineering
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Engineering (miscellaneous)

これを引用

Naitoh, K., Takagi, Y., Kuwahara, K., Krause, E., & Ishii, K. (1989). Three dimensional computation of transition to turbulence in a reciprocating engine. : AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989 [AIAA 89-1886] American Institute of Aeronautics and Astronautics Inc, AIAA.

Three dimensional computation of transition to turbulence in a reciprocating engine. / Naitoh, Ken; Takagi, Yasuo; Kuwahara, Kunio; Krause, Egon; Ishii, Katsuya.

AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989. American Institute of Aeronautics and Astronautics Inc, AIAA, 1989. AIAA 89-1886.

研究成果: Conference contribution

Naitoh, K, Takagi, Y, Kuwahara, K, Krause, E & Ishii, K 1989, Three dimensional computation of transition to turbulence in a reciprocating engine. : AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989., AIAA 89-1886, American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989, Buffalo, United States, 89/6/12.
Naitoh K, Takagi Y, Kuwahara K, Krause E, Ishii K. Three dimensional computation of transition to turbulence in a reciprocating engine. : AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989. American Institute of Aeronautics and Astronautics Inc, AIAA. 1989. AIAA 89-1886
Naitoh, Ken ; Takagi, Yasuo ; Kuwahara, Kunio ; Krause, Egon ; Ishii, Katsuya. / Three dimensional computation of transition to turbulence in a reciprocating engine. AIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989. American Institute of Aeronautics and Astronautics Inc, AIAA, 1989.
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