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

70 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
Externally publishedYes

Fingerprint

flame interaction
compressible flow
Compressible flow
Large eddy simulation
large eddy simulation
engines
Vortex flow
Turbulence
turbulence
vortices
Engines
formulations
Direct numerical simulation
direct numerical simulation
flames
Reynolds number
Numerical methods
simulation

ASJC Scopus subject areas

  • Mechanical Engineering
  • Statistical and Nonlinear Physics

Cite this

Large eddy simulation and direct simulation of compressible turbulence and combusting flows in engines based on the BI-SCALES method. / Naitoh, Ken; Kuwahara, Kunio.

In: Fluid Dynamics Research, Vol. 10, No. 4-6, 1992, p. 299-325.

Research output: Contribution to journalArticle

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