Large eddy simulation of premixed-flame in engine based on the multi-level formulation and the renormalization group theory

Ken Naitoh*, Teruyuki Itoh, Yasuo Takagi, Kunio Kuwahara

*この研究の対応する著者

研究成果: Conference article査読

18 被引用数 (Scopus)

抄録

Large Eddy Simulation of the turbulent premixed-flame in engine is performed in a wide range of the operating conditions such as engine speed, air-fuel ratio, and ignition timing. Firstly, a mathematical formulation suitable for Large Eddy Simulation (LES) and Direct Numerical Simulation (DNS) of the compressible turbulence and combusting flows is derived, which is the Multi-Level formulation. And a numerical algorithm based on the formulation is developed in order to calculate precisely the supergrid fluctuations of the physical quantities. As the determinations of the subgrid-turbulence and flame wrinkling, the Yakhot-Orszag turbulence model based on the Renormalization Group theory(RNG theory) and a flame-sheet model are combined with the numerical code. Computations are performed for a real engine with dual intakeport and valves. Obtained computational data agrees well with the experimental data on turbulence-intensity and pressure history.

本文言語English
ジャーナルSAE Technical Papers
DOI
出版ステータスPublished - 1992 1月 1
外部発表はい
イベントInternational Congress and Exposition - Detroit, MI, United States
継続期間: 1992 2月 241992 2月 28

ASJC Scopus subject areas

  • 自動車工学
  • 安全性、リスク、信頼性、品質管理
  • 汚染
  • 産業および生産工学

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