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

Ken Naitoh; Kunio Kuwahara

doi:10.1016/0169-5983(92)90027-T

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

Ken Naitoh^*, Kunio Kuwahara

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

77 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 language	English
Pages (from-to)	299-325
Number of pages	27
Journal	Fluid Dynamics Research
Volume	10
Issue number	4-6
DOIs	https://doi.org/10.1016/0169-5983(92)90027-T
Publication status	Published - 1992 Dec
Externally published	Yes

ASJC Scopus subject areas

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

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10.1016/0169-5983(92)90027-T

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

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.",

author = "Ken Naitoh and Kunio Kuwahara",

year = "1992",

month = dec,

doi = "10.1016/0169-5983(92)90027-T",

language = "English",

volume = "10",

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journal = "Fluid Dynamics Research",

issn = "0169-5983",

publisher = "IOP Publishing Ltd.",

number = "4-6",

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TY - JOUR

T1 - Large eddy simulation and direct simulation of compressible turbulence and combusting flows in engines based on the BI-SCALES method

AU - Naitoh, Ken

AU - Kuwahara, Kunio

PY - 1992/12

Y1 - 1992/12

N2 - 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.

AB - 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.

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JO - Fluid Dynamics Research

JF - Fluid Dynamics Research

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ER -

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

Abstract

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