Hydroxyl time and length scale measurements in turbulent opposed-jet partially premixed CH4/air flames

K. K. Venkatesan; J. Zhang; M. M. Gluesenkamp; G. B. King; N. M. Laurendeau; M. W. Renfro

Hydroxyl time and length scale measurements in turbulent opposed-jet partially premixed CH₄/air flames

K. K. Venkatesan, J. Zhang, M. M. Gluesenkamp, G. B. King, N. M. Laurendeau, M. W. Renfro

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Simultaneous two-point hydroxyl time-series measurements in turbulent opposed-jet partially premixed methane-air vs. air flames are used to study the spatial and temporal statistics for various fuel-side equivalence ratios (Φ_B) and Reynolds numbers (Re). This study provides unique length and time scale information in regions where flow stagnation occurs and where Taylor's hypothesis is inapplicable. In general, maximum OH fluctuations occur at the stagnation plane, thus minimizing the OH integral length scale at the axial location of peak OH. For all flames of this study, trends in OH length scale follow those of axial time scale (τ_I,OH). For flames with constant Re, l_r,OH decreases with less partial premixing. Similar to OH integral time scales, for flames with the same fuel composition, l_r,OH decreases with increasing Re.

Original language	English
Title of host publication	5th US Combustion Meeting 2007
Pages	823-833
Number of pages	11
ISBN (Electronic)	9781604238112
State	Published - 2007
Event	5th US Combustion Meeting 2007 - San Diego, United States Duration: Mar 25 2007 → Mar 28 2007

Publication series

Name	5th US Combustion Meeting 2007
Volume	2

Conference

Conference	5th US Combustion Meeting 2007
Country/Territory	United States
City	San Diego
Period	3/25/07 → 3/28/07

ASJC Scopus subject areas

General Chemical Engineering
Physical and Theoretical Chemistry
Mechanical Engineering

Cite this

@inproceedings{ec2569b3c2564db3af9dd1b270875c39,

title = "Hydroxyl time and length scale measurements in turbulent opposed-jet partially premixed CH4/air flames",

abstract = "Simultaneous two-point hydroxyl time-series measurements in turbulent opposed-jet partially premixed methane-air vs. air flames are used to study the spatial and temporal statistics for various fuel-side equivalence ratios (ΦB) and Reynolds numbers (Re). This study provides unique length and time scale information in regions where flow stagnation occurs and where Taylor's hypothesis is inapplicable. In general, maximum OH fluctuations occur at the stagnation plane, thus minimizing the OH integral length scale at the axial location of peak OH. For all flames of this study, trends in OH length scale follow those of axial time scale (τI,OH). For flames with constant Re, lr,OH decreases with less partial premixing. Similar to OH integral time scales, for flames with the same fuel composition, lr,OH decreases with increasing Re.",

author = "Venkatesan, {K. K.} and J. Zhang and Gluesenkamp, {M. M.} and King, {G. B.} and Laurendeau, {N. M.} and Renfro, {M. W.}",

year = "2007",

language = "English",

series = "5th US Combustion Meeting 2007",

pages = "823--833",

booktitle = "5th US Combustion Meeting 2007",

note = "5th US Combustion Meeting 2007 ; Conference date: 25-03-2007 Through 28-03-2007",

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TY - GEN

T1 - Hydroxyl time and length scale measurements in turbulent opposed-jet partially premixed CH4/air flames

AU - Venkatesan, K. K.

AU - Zhang, J.

AU - Gluesenkamp, M. M.

AU - King, G. B.

AU - Laurendeau, N. M.

AU - Renfro, M. W.

PY - 2007

Y1 - 2007

N2 - Simultaneous two-point hydroxyl time-series measurements in turbulent opposed-jet partially premixed methane-air vs. air flames are used to study the spatial and temporal statistics for various fuel-side equivalence ratios (ΦB) and Reynolds numbers (Re). This study provides unique length and time scale information in regions where flow stagnation occurs and where Taylor's hypothesis is inapplicable. In general, maximum OH fluctuations occur at the stagnation plane, thus minimizing the OH integral length scale at the axial location of peak OH. For all flames of this study, trends in OH length scale follow those of axial time scale (τI,OH). For flames with constant Re, lr,OH decreases with less partial premixing. Similar to OH integral time scales, for flames with the same fuel composition, lr,OH decreases with increasing Re.

AB - Simultaneous two-point hydroxyl time-series measurements in turbulent opposed-jet partially premixed methane-air vs. air flames are used to study the spatial and temporal statistics for various fuel-side equivalence ratios (ΦB) and Reynolds numbers (Re). This study provides unique length and time scale information in regions where flow stagnation occurs and where Taylor's hypothesis is inapplicable. In general, maximum OH fluctuations occur at the stagnation plane, thus minimizing the OH integral length scale at the axial location of peak OH. For all flames of this study, trends in OH length scale follow those of axial time scale (τI,OH). For flames with constant Re, lr,OH decreases with less partial premixing. Similar to OH integral time scales, for flames with the same fuel composition, lr,OH decreases with increasing Re.

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