Reaction layer visualization: A comparison of two PLIF techniques and advantages of kHz-imaging

Aaron W. Skiba; Timothy M. Wabel; Campbell D. Carter; Stephen D. Hammack; Jacob E. Temme; Tonghun Lee; James F. Driscoll

doi:10.1016/j.proci.2016.07.033

Reaction layer visualization: A comparison of two PLIF techniques and advantages of kHz-imaging

Aaron W. Skiba, Timothy M. Wabel, Campbell D. Carter, Stephen D. Hammack, Jacob E. Temme, Tonghun Lee, James F. Driscoll

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

Abstract

Two approaches for visualizing reaction layers of flames a planar laser-induced fluorescence (PLIF) of CH radicals and the product of simultaneously acquired PLIF images of OH radicals and CH₂O to produce "overlap layers" were compared. Evaluation of both thin and thickened CH- and overlap layers in four flames of different turbulence intensities showed that average overlap- and CH-layer thickness exhibit the same trend with increasing turbulence levels. Additionally flame surface density profiles from both techniques agreed well showing similar magnitude values and decay rates with increasing distance from centerline. Results showed that CH-PLIF images can be acquired at a rate of 10 kHz within extremely turbulent flames thus quantifying the rate of flamelet-merging which is a significant quantity in models of turbulent premixed combustion.

Original language	English (US)
Pages (from-to)	4593-4601
Number of pages	9
Journal	Proceedings of the Combustion Institute
Volume	36
Issue number	3
DOIs	https://doi.org/10.1016/j.proci.2016.07.033
State	Published - 2017

Keywords

CH-PLIF
Hi-pilot burner
Reaction layer imaging
Turbulent premixed combustion
kHz-PLIF

ASJC Scopus subject areas

Chemical Engineering(all)
Mechanical Engineering
Physical and Theoretical Chemistry

Online availability

10.1016/j.proci.2016.07.033

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@article{9e071e12ea5d4a09843a66d3396d59c5,

title = "Reaction layer visualization: A comparison of two PLIF techniques and advantages of kHz-imaging",

abstract = "Two approaches for visualizing reaction layers of flames a planar laser-induced fluorescence (PLIF) of CH radicals and the product of simultaneously acquired PLIF images of OH radicals and CH2O to produce {"}overlap layers{"} were compared. Evaluation of both thin and thickened CH- and overlap layers in four flames of different turbulence intensities showed that average overlap- and CH-layer thickness exhibit the same trend with increasing turbulence levels. Additionally flame surface density profiles from both techniques agreed well showing similar magnitude values and decay rates with increasing distance from centerline. Results showed that CH-PLIF images can be acquired at a rate of 10 kHz within extremely turbulent flames thus quantifying the rate of flamelet-merging which is a significant quantity in models of turbulent premixed combustion.",

keywords = "CH-PLIF, Hi-pilot burner, Reaction layer imaging, Turbulent premixed combustion, kHz-PLIF",

author = "Skiba, {Aaron W.} and Wabel, {Timothy M.} and Carter, {Campbell D.} and Hammack, {Stephen D.} and Temme, {Jacob E.} and Tonghun Lee and Driscoll, {James F.}",

note = "Funding Information: The authors thank AFOSR for including support through the project Grant FA9550-12-1-0101.",

year = "2017",

doi = "10.1016/j.proci.2016.07.033",

language = "English (US)",

volume = "36",

pages = "4593--4601",

journal = "Proceedings of the Combustion Institute",

issn = "1540-7489",

publisher = "Elsevier Limited",

number = "3",

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TY - JOUR

T1 - Reaction layer visualization

T2 - A comparison of two PLIF techniques and advantages of kHz-imaging

AU - Skiba, Aaron W.

AU - Wabel, Timothy M.

AU - Carter, Campbell D.

AU - Hammack, Stephen D.

AU - Temme, Jacob E.

AU - Lee, Tonghun

AU - Driscoll, James F.

N1 - Funding Information: The authors thank AFOSR for including support through the project Grant FA9550-12-1-0101.

PY - 2017

Y1 - 2017

N2 - Two approaches for visualizing reaction layers of flames a planar laser-induced fluorescence (PLIF) of CH radicals and the product of simultaneously acquired PLIF images of OH radicals and CH2O to produce "overlap layers" were compared. Evaluation of both thin and thickened CH- and overlap layers in four flames of different turbulence intensities showed that average overlap- and CH-layer thickness exhibit the same trend with increasing turbulence levels. Additionally flame surface density profiles from both techniques agreed well showing similar magnitude values and decay rates with increasing distance from centerline. Results showed that CH-PLIF images can be acquired at a rate of 10 kHz within extremely turbulent flames thus quantifying the rate of flamelet-merging which is a significant quantity in models of turbulent premixed combustion.

AB - Two approaches for visualizing reaction layers of flames a planar laser-induced fluorescence (PLIF) of CH radicals and the product of simultaneously acquired PLIF images of OH radicals and CH2O to produce "overlap layers" were compared. Evaluation of both thin and thickened CH- and overlap layers in four flames of different turbulence intensities showed that average overlap- and CH-layer thickness exhibit the same trend with increasing turbulence levels. Additionally flame surface density profiles from both techniques agreed well showing similar magnitude values and decay rates with increasing distance from centerline. Results showed that CH-PLIF images can be acquired at a rate of 10 kHz within extremely turbulent flames thus quantifying the rate of flamelet-merging which is a significant quantity in models of turbulent premixed combustion.

KW - CH-PLIF

KW - Hi-pilot burner

KW - Reaction layer imaging

KW - Turbulent premixed combustion

KW - kHz-PLIF

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UR - http://www.scopus.com/inward/citedby.url?scp=85008684132&partnerID=8YFLogxK

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DO - 10.1016/j.proci.2016.07.033

M3 - Article

AN - SCOPUS:85008684132

SN - 1540-7489

VL - 36

SP - 4593

EP - 4601

JO - Proceedings of the Combustion Institute

JF - Proceedings of the Combustion Institute

IS - 3

ER -

Reaction layer visualization: A comparison of two PLIF techniques and advantages of kHz-imaging

Abstract

Keywords

ASJC Scopus subject areas

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