Turbulent flames with compositionally inhomogeneous inlets: Resolved measurements of scalar dissipation rates

H. C. Cutcher; R. S. Barlow; G. Magnotti; A. R. Masri

doi:10.1016/j.proci.2016.07.093

Turbulent flames with compositionally inhomogeneous inlets: Resolved measurements of scalar dissipation rates

H. C. Cutcher^*, R. S. Barlow, G. Magnotti, A. R. Masri

^*Corresponding author for this work

Mechanical Engineering

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

24 Scopus citations

Abstract

Highly resolved measurements of scalar dissipation rates in turbulent piloted methane/air flames with compositionally inhomogeneous inlets were presented. There were many regions and flame conditions where the scalar dissipation results were similar for the fine and coarse data sets that includes downstream locations of cases with homogeneous inlets and high-temperature regions in the near field of flames with in- homogeneous inlets. At upstream locations for jets with homogeneous inlets as well as for the high-temperature regions of flames with inhomogeneous inlets both fine and coarse measurements of scalar dissipation rates yielded similar results giving confidence that measurements resolve the local dissipation scales. Downstream locations in homogeneous mixtures showed similar results for both coarse and fine measurements across all mixtures.

Original language	English (US)
Pages (from-to)	1737-1745
Number of pages	9
Journal	Proceedings of the Combustion Institute
Volume	36
Issue number	2
DOIs	https://doi.org/10.1016/j.proci.2016.07.093
State	Published - 2017

Keywords

Inhomogeneous composition
Partially premixed flames
Scalar dissipation rates
Turbulent flames

ASJC Scopus subject areas

General Chemical Engineering
Mechanical Engineering
Physical and Theoretical Chemistry

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10.1016/j.proci.2016.07.093

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@article{857f4dff17c443f08fe98b9d18b96be3,

title = "Turbulent flames with compositionally inhomogeneous inlets: Resolved measurements of scalar dissipation rates",

abstract = "Highly resolved measurements of scalar dissipation rates in turbulent piloted methane/air flames with compositionally inhomogeneous inlets were presented. There were many regions and flame conditions where the scalar dissipation results were similar for the fine and coarse data sets that includes downstream locations of cases with homogeneous inlets and high-temperature regions in the near field of flames with in- homogeneous inlets. At upstream locations for jets with homogeneous inlets as well as for the high-temperature regions of flames with inhomogeneous inlets both fine and coarse measurements of scalar dissipation rates yielded similar results giving confidence that measurements resolve the local dissipation scales. Downstream locations in homogeneous mixtures showed similar results for both coarse and fine measurements across all mixtures.",

keywords = "Inhomogeneous composition, Partially premixed flames, Scalar dissipation rates, Turbulent flames",

author = "Cutcher, {H. C.} and Barlow, {R. S.} and G. Magnotti and Masri, {A. R.}",

note = "Funding Information: Work at the University of Sydney was supported by the Australian Research Council. Work at Sandia was supported by the Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences, US Department of Energy. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94-AL85000. Contributions by Bob Harmon in support of these experiments are gratefully acknowledged.",

year = "2017",

doi = "10.1016/j.proci.2016.07.093",

language = "English (US)",

volume = "36",

pages = "1737--1745",

journal = "Proceedings of the Combustion Institute",

issn = "1540-7489",

publisher = "Elsevier",

number = "2",

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TY - JOUR

T1 - Turbulent flames with compositionally inhomogeneous inlets

T2 - Resolved measurements of scalar dissipation rates

AU - Cutcher, H. C.

AU - Barlow, R. S.

AU - Magnotti, G.

AU - Masri, A. R.

N1 - Funding Information: Work at the University of Sydney was supported by the Australian Research Council. Work at Sandia was supported by the Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences, US Department of Energy. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94-AL85000. Contributions by Bob Harmon in support of these experiments are gratefully acknowledged.

PY - 2017

Y1 - 2017

N2 - Highly resolved measurements of scalar dissipation rates in turbulent piloted methane/air flames with compositionally inhomogeneous inlets were presented. There were many regions and flame conditions where the scalar dissipation results were similar for the fine and coarse data sets that includes downstream locations of cases with homogeneous inlets and high-temperature regions in the near field of flames with in- homogeneous inlets. At upstream locations for jets with homogeneous inlets as well as for the high-temperature regions of flames with inhomogeneous inlets both fine and coarse measurements of scalar dissipation rates yielded similar results giving confidence that measurements resolve the local dissipation scales. Downstream locations in homogeneous mixtures showed similar results for both coarse and fine measurements across all mixtures.

AB - Highly resolved measurements of scalar dissipation rates in turbulent piloted methane/air flames with compositionally inhomogeneous inlets were presented. There were many regions and flame conditions where the scalar dissipation results were similar for the fine and coarse data sets that includes downstream locations of cases with homogeneous inlets and high-temperature regions in the near field of flames with in- homogeneous inlets. At upstream locations for jets with homogeneous inlets as well as for the high-temperature regions of flames with inhomogeneous inlets both fine and coarse measurements of scalar dissipation rates yielded similar results giving confidence that measurements resolve the local dissipation scales. Downstream locations in homogeneous mixtures showed similar results for both coarse and fine measurements across all mixtures.

KW - Inhomogeneous composition

KW - Partially premixed flames

KW - Scalar dissipation rates

KW - Turbulent flames

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U2 - 10.1016/j.proci.2016.07.093

DO - 10.1016/j.proci.2016.07.093

M3 - Article

AN - SCOPUS:85013668018

SN - 1540-7489

VL - 36

SP - 1737

EP - 1745

JO - Proceedings of the Combustion Institute

JF - Proceedings of the Combustion Institute

IS - 2

ER -

Turbulent flames with compositionally inhomogeneous inlets: Resolved measurements of scalar dissipation rates

Abstract

Keywords

ASJC Scopus subject areas

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