Large eddy simulation and direct simulation of compressible turbulence and combusting flows in engines based on the BI-SCALES method

Ken Naitoh, Kunio Kuwahara

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

Physical features of turbulence and vortex-flame interaction in engines are investigated by performing large eddy simulation and direct numerical simulation of compressible flows. A BI-SCALES (Boundary-Inner Smoothly Coupled, Alternating multi-Level Equations System) is proposed, which is a mathematical formulation of the system of governing equations suitable for computations of compressible flows. A numerical method based on the proposed formulation is developed. Using the method, the transition to turbulence in the compression process and the cyclic variations are examined. Then, the vortex-flame interaction is studied, mainly on the relation between the flame structure and the Kalvoritz- and turbulent Reynolds number effect. Finally, the large wrinkle simulation (LWS) of engine combusting flow is performed.

Original languageEnglish
Pages (from-to)299-325
Number of pages27
JournalFluid Dynamics Research
Volume10
Issue number4-6
DOIs
Publication statusPublished - 1992 Dec

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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