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Multi-regime mixing modeling for local extinction and re-ignition in turbulent non-premixed flame by using LES/FDF method

Journal Article · · Flow, Turbulence and Combustion
 [1];  [2]
  1. Purdue Univ., West Lafayette, IN (United States); Purdue University
  2. Purdue Univ., West Lafayette, IN (United States)

Local extinction and re-ignition occur in turbulent non-premixed combustion when the Damköhler number is not large enough and the combustion is not fully mixing controlled. The occurrence of local extinction introduces locally extinguished flame holes followed by a premixed flame propagation toward the hole center to potentially reignite the flame. The co-existence of the non-premixed and premixed combustion regimes complicates the modeling since traditional combustion models are mostly for a single regime. In this work, we examine the effect of multi-regime mixing modeling in the transported filtered density function (FDF) method on the predictions of local extinction and reignition. Predictions of local extinction and reignition remain a challenge for the FDF method despite the progress made in the past. To account for the multi-regime combustion, two different mixing timescale models for non-premixed and premixed combustion are combined. A flame index based on the gradients of fuel and oxidizer is used to define a weighting factor to blend the two mixing timescale models. A turbulent jet non-premixed flame with substantial local extinction, the Sydney piloted jet flame L, is adopted as a test case to examine the performance of the multi-regime model in large-eddy simulation/FDF modeling. It is found that the traditional non-premixed mixing timescale model when combined with the modified Curl mixing leads to global extinction for the Sydney flame L without the presence of the premixed combustion regime. After accounting for the multi-regime combustion with proper detection of the different combustion regimes, the predictions for the flame statistics and the amount of local extinction are significantly improved. Furthermore, it suggests the need of including multi-regime combustion for the predictions of local extinction and re-ignition in turbulent non-premixed combustion configurations.

Research Organization:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
Grant/Contract Number:
EE0008876
OSTI ID:
1971654
Journal Information:
Flow, Turbulence and Combustion, Journal Name: Flow, Turbulence and Combustion Journal Issue: 1 Vol. 111; ISSN 1386-6184
Publisher:
European Research Community on Flow, Turbulence and Combustion (ERCOFTAC)Copyright Statement
Country of Publication:
United States
Language:
English

References (62)

LES/PDF Modeling of Turbulent Premixed Flames with Locally Enhanced Mixing by Reaction journal July 2017
Mixing Time Scale Models for Multiple Mapping Conditioning with Two Reference Variables journal June 2020
Identification of Flame Regimes in Partially Premixed Combustion from a Quasi-DNS Dataset journal October 2020
The local structure of turbulent nonpremixed flames near extinction journal September 1990
PDF calculations of piloted turbulent nonpremixed flames of methane journal July 1990
An approach to the autoignition of a turbulent mixture journal September 1974
Laminar diffusion flamelet models in non-premixed turbulent combustion journal January 1984
PDF methods for turbulent reactive flows journal January 1985
PDF calculations of turbulent nonpremixed flames with local extinction journal November 2000
Pdf Modeling of Finite-rate Chemistry Effects in Turbulent Nonpremixed Jet Flames journal October 1998
A mixing model for turbulent reactive flows based on Euclidean minimum spanning trees journal December 1998
Joint scalar probability density function modeling of pollutant formation in piloted turbulent jet diffusion flames with comprehensive chemistry journal January 2000
Computations of turbulent combustion: Progress and challenges journal January 1991
The structure of turbulent nonpremixed flames journal January 1989
A numerical study on flame stability at the transition point of jet diffusion flames journal January 1996
Effects of turbulence on species mass fractions in methane/air jet flames journal January 1998
Turbulent combustion modeling journal March 2002
The structure of turbulent nonpremixed flames revealed by Raman-Rayleigh-LIF measurements journal January 1996
Large-eddy simulation of premixed turbulent combustion using a level-set approach journal January 2002
Piloted methane/air jet flames: Transport effects and aspects of scalar structure journal December 2005
Prediction of extinction and reignition in nonpremixed turbulent flames using a flamelet/progress variable model journal October 2008
Large Eddy Simulation of the Sandia Flame Series (D–F) using the Eulerian stochastic field method journal September 2010
High-speed OH-PLIF imaging of extinction and re-ignition in non-premixed flames with various levels of oxygenation journal May 2011
Capabilities and limitations of multi-regime flamelet combustion models journal January 2012
An extended multi-regime flamelet model for IC engines journal August 2012
Tabulation of combustion chemistry via Artificial Neural Networks (ANNs): Methodology and application to LES-PDF simulation of Sydney flame L journal November 2017
Regime identification from Raman/Rayleigh line measurements in partially premixed flames journal March 2018
Local flame structure analysis in turbulent CH4/air flames with multi-regime characteristics journal December 2019
Turbulent multi-regime methane-air flames analysed by Raman/Rayleigh spectroscopy and conditional velocity field measurements journal September 2022
A priori assessment of flame surface density modelling for large-eddy simulation of sound generation by turbulent premixed flames journal July 2022
The effect of mixing models in PDF calculations of piloted jet flames journal January 2007
Capturing localised extinction in Sandia Flame F with LES–CMC journal January 2011
Experimental study of flame-hole reignition mechanisms in a turbulent non-premixed jet flame using sustained multi-kHz PIV and crossed-plane OH PLIF journal January 2011
Large eddy simulation/probability density function modeling of a turbulent CH4/H2/N2 jet flame journal January 2011
Scalar dissipation rate modelling for Large Eddy Simulation of turbulent premixed flames journal January 2013
Small scales, many species and the manifold challenges of turbulent combustion journal January 2013
Effect of molecular transport on PDF modeling of turbulent non-premixed flames journal January 2015
Characterization of multi-regime reaction zones in a piloted inhomogeneous jet flame with local extinction journal January 2021
A priori analysis of a power-law mixing model for transported PDF model based on high Karlovitz turbulent premixed DNS flames journal January 2021
Improved MMC-LES to compute the structure of a mixed-mode turbulent flame series journal January 2021
A Lagrangian-based flame index for the transported probability density function method journal January 2022
Turbulent Combustion book January 2010
Turbulent Flows book July 2012
The modeling of turbulent reactive flows based on multiple mapping conditioning journal July 2003
Interaction of turbulence and scalar fields in premixed flames journal April 2006
Influence of the Damköhler number on turbulence-scalar interaction in premixed flames. II. Model development journal April 2007
Scalar gradient and small-scale structure in turbulent premixed combustion journal November 2007
A proposed modification of the Germano subgrid‐scale closure method journal March 1992
Conditional moment closure for turbulent reacting flow journal February 1993
Analysis and modeling of subgrid scalar mixing using numerical data journal May 1996
Filtered density function for large eddy simulation of turbulent reacting flows journal February 1998
A dynamic model for subgrid-scale variance and dissipation rate of a conserved scalar journal December 1998
Conditional Moment Closure for Turbulent Premixed Flames journal October 2012
Pdf Modeling of Turbulent Nonpremixed Methane Jet Flames journal April 1989
Investigation of extinction and re-ignition in piloted turbulent non-premixed methane–air flames using LES and high-speed OH-LIF journal June 2013
Studies of the flow and turbulence fields in a turbulent pulsed jet flame using LES/PDF journal April 2017
Time-averaging strategies in the finite-volume/particle hybrid algorithm for the joint PDF equation of turbulent reactive flows journal May 2008
Computationally efficient implementation of combustion chemistry using in situ adaptive tabulation journal January 1997
Ten questions concerning the large-eddy simulation of turbulent flows journal January 2004
General Circulation Experiments with the Primitive Equations: i. the Basic Experiment* journal March 1963
Closure of the Transport Equation for the Probability Density Funcfion of Turbulent Scalar Fields journal January 1979
Scalar Filtered Density Function for Large Eddy Simulation of a Bunsen Burner journal January 2010

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