Multiple conditioned analysis of the turbulent stratified flame A

Thabo Stahler; Dirk Geyer; Gaetano Magnotti; Philipp Trunk; Matthew J. Dunn; Robert S. Barlow; Andreas Dreizler

doi:10.1016/j.proci.2016.08.070

Multiple conditioned analysis of the turbulent stratified flame A

Thabo Stahler, Dirk Geyer^*, Gaetano Magnotti, Philipp Trunk, Matthew J. Dunn, Robert S. Barlow, Andreas Dreizler

^*Corresponding author for this work

Mechanical Engineering

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

11 Scopus citations

Abstract

The sensitivity of lean combustion to stratification level was studied in a turbulent flow field for the turbulent stratified flames configuration. Differential diffusion caused by the flux of species e.g. H₂ was identified for all stratification levels. The effect of stratification onto the flame micro-structure was evident in the pre- heat zone and in the reaction zone as shown by the means of the local equivalence ratio. The temperature profiles in this back-supported configuration were more impacted on the reactant side than on the product side by stratification. In contrast equivalence ratios as well as mass fractions of hydrogen were sensitive to stratification on the product side as well as in the reactants.

Original language	English (US)
Pages (from-to)	1947-1955
Number of pages	9
Journal	Proceedings of the Combustion Institute
Volume	36
Issue number	2
DOIs	https://doi.org/10.1016/j.proci.2016.08.070
State	Published - 2017

Keywords

Lean-premixed combustion
Multiple conditioned data analysis
Raman/Rayleigh scattering
Stratified flames
Turbulent combustion

ASJC Scopus subject areas

General Chemical Engineering
Mechanical Engineering
Physical and Theoretical Chemistry

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10.1016/j.proci.2016.08.070

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title = "Multiple conditioned analysis of the turbulent stratified flame A",

abstract = "The sensitivity of lean combustion to stratification level was studied in a turbulent flow field for the turbulent stratified flames configuration. Differential diffusion caused by the flux of species e.g. H2 was identified for all stratification levels. The effect of stratification onto the flame micro-structure was evident in the pre- heat zone and in the reaction zone as shown by the means of the local equivalence ratio. The temperature profiles in this back-supported configuration were more impacted on the reactant side than on the product side by stratification. In contrast equivalence ratios as well as mass fractions of hydrogen were sensitive to stratification on the product side as well as in the reactants.",

keywords = "Lean-premixed combustion, Multiple conditioned data analysis, Raman/Rayleigh scattering, Stratified flames, Turbulent combustion",

author = "Thabo Stahler and Dirk Geyer and Gaetano Magnotti and Philipp Trunk and Dunn, {Matthew J.} and Barlow, {Robert S.} and Andreas Dreizler",

note = "Funding Information: We gratefully acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) through DR 3 74/13 and GE 2523/1 . A. Dreizler was financially supported by the Gottfried Wilhelm Leibniz-Preis (DFG). Work at Sandia was supported by the United States Department of Energy , Office of Basic Energy Science, and Biosciences. Sandia National Laboratories is a multiprogram operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94-AL85000 . The authors also thank Bob Harmon for his contributions to the experiments.",

year = "2017",

doi = "10.1016/j.proci.2016.08.070",

language = "English (US)",

volume = "36",

pages = "1947--1955",

journal = "Proceedings of the Combustion Institute",

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publisher = "Elsevier",

number = "2",

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AU - Stahler, Thabo

AU - Geyer, Dirk

AU - Magnotti, Gaetano

AU - Trunk, Philipp

AU - Dunn, Matthew J.

AU - Barlow, Robert S.

AU - Dreizler, Andreas

N1 - Funding Information: We gratefully acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) through DR 3 74/13 and GE 2523/1 . A. Dreizler was financially supported by the Gottfried Wilhelm Leibniz-Preis (DFG). Work at Sandia was supported by the United States Department of Energy , Office of Basic Energy Science, and Biosciences. Sandia National Laboratories is a multiprogram operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94-AL85000 . The authors also thank Bob Harmon for his contributions to the experiments.

PY - 2017

Y1 - 2017

N2 - The sensitivity of lean combustion to stratification level was studied in a turbulent flow field for the turbulent stratified flames configuration. Differential diffusion caused by the flux of species e.g. H2 was identified for all stratification levels. The effect of stratification onto the flame micro-structure was evident in the pre- heat zone and in the reaction zone as shown by the means of the local equivalence ratio. The temperature profiles in this back-supported configuration were more impacted on the reactant side than on the product side by stratification. In contrast equivalence ratios as well as mass fractions of hydrogen were sensitive to stratification on the product side as well as in the reactants.

AB - The sensitivity of lean combustion to stratification level was studied in a turbulent flow field for the turbulent stratified flames configuration. Differential diffusion caused by the flux of species e.g. H2 was identified for all stratification levels. The effect of stratification onto the flame micro-structure was evident in the pre- heat zone and in the reaction zone as shown by the means of the local equivalence ratio. The temperature profiles in this back-supported configuration were more impacted on the reactant side than on the product side by stratification. In contrast equivalence ratios as well as mass fractions of hydrogen were sensitive to stratification on the product side as well as in the reactants.

KW - Lean-premixed combustion

KW - Multiple conditioned data analysis

KW - Raman/Rayleigh scattering

KW - Stratified flames

KW - Turbulent combustion

UR - http://www.scopus.com/inward/record.url?scp=84992043936&partnerID=8YFLogxK

U2 - 10.1016/j.proci.2016.08.070

DO - 10.1016/j.proci.2016.08.070

M3 - Article

AN - SCOPUS:84992043936

SN - 1540-7489

VL - 36

SP - 1947

EP - 1955

JO - Proceedings of the Combustion Institute

JF - Proceedings of the Combustion Institute

IS - 2

ER -

Multiple conditioned analysis of the turbulent stratified flame A

Abstract

Keywords

ASJC Scopus subject areas

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