Tabulation of turbulent burning rates via a combination of a stochastic mixing model and tabulated chemistry

H. Schmidt, M. Oevermann, R.J.M. Bastiaans, A.R. Kerstein

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

In this paper we propose a technique for a priori turbulent flame speed tabulation (TFST) for a given parameter space in standard combustion- regime diagrams. It can be used as a subgrid-scale (SGS) model in Large Eddy Simulation (LES). In a first step, stationary laminar flamelets are computed and stored over the progress variable following the ideas of flamelet generated manifolds (FGM). In a second step, the incompressible one-dimensional Navier-Stokes equations supplemented by the equation for the progress variable are solved on a grid that resolves all turbulent scales. Additionally, turbulent transport is implemented via the linear eddy model (LEM). The turbulent flame structures are solved until a statistically stationary mean value of the turbulent flame speed has been reached. The results are stored in a table that could be used by large scale premixed combustion models, e.g. front tracking schemes. Results are compared to an algebraic model and to direct numerical simulations (DNS).
LanguageEnglish
Pages1-17
JournalZIB Report
Volume08
Issue number02
StatePublished - 2008

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combustion
Navier-Stokes equations
large eddy simulation
eddy
diagram
rate
simulation
speed
parameter

Cite this

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title = "Tabulation of turbulent burning rates via a combination of a stochastic mixing model and tabulated chemistry",
abstract = "In this paper we propose a technique for a priori turbulent flame speed tabulation (TFST) for a given parameter space in standard combustion- regime diagrams. It can be used as a subgrid-scale (SGS) model in Large Eddy Simulation (LES). In a first step, stationary laminar flamelets are computed and stored over the progress variable following the ideas of flamelet generated manifolds (FGM). In a second step, the incompressible one-dimensional Navier-Stokes equations supplemented by the equation for the progress variable are solved on a grid that resolves all turbulent scales. Additionally, turbulent transport is implemented via the linear eddy model (LEM). The turbulent flame structures are solved until a statistically stationary mean value of the turbulent flame speed has been reached. The results are stored in a table that could be used by large scale premixed combustion models, e.g. front tracking schemes. Results are compared to an algebraic model and to direct numerical simulations (DNS).",
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Tabulation of turbulent burning rates via a combination of a stochastic mixing model and tabulated chemistry. / Schmidt, H.; Oevermann, M.; Bastiaans, R.J.M.; Kerstein, A.R.

In: ZIB Report, Vol. 08, No. 02, 2008, p. 1-17.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Tabulation of turbulent burning rates via a combination of a stochastic mixing model and tabulated chemistry

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AU - Oevermann,M.

AU - Bastiaans,R.J.M.

AU - Kerstein,A.R.

PY - 2008

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AB - In this paper we propose a technique for a priori turbulent flame speed tabulation (TFST) for a given parameter space in standard combustion- regime diagrams. It can be used as a subgrid-scale (SGS) model in Large Eddy Simulation (LES). In a first step, stationary laminar flamelets are computed and stored over the progress variable following the ideas of flamelet generated manifolds (FGM). In a second step, the incompressible one-dimensional Navier-Stokes equations supplemented by the equation for the progress variable are solved on a grid that resolves all turbulent scales. Additionally, turbulent transport is implemented via the linear eddy model (LEM). The turbulent flame structures are solved until a statistically stationary mean value of the turbulent flame speed has been reached. The results are stored in a table that could be used by large scale premixed combustion models, e.g. front tracking schemes. Results are compared to an algebraic model and to direct numerical simulations (DNS).

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