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

6 被引用数 (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.

本文言語English
ホスト出版物のタイトルAIAA 20th Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1989
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
出版ステータスPublished - 1989
外部発表はい
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
国/地域United States
CityBuffalo
Period89/6/1289/6/14

ASJC Scopus subject areas

  • 航空宇宙工学
  • 凝縮系物理学
  • 電子工学および電気工学
  • 工学(その他)

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