Effect of fuel dilution on jet flames in a heated and diluted co-flow

P. R. Medwell; P. A.M. Kalt; B. B. Dally

Effect of fuel dilution on jet flames in a heated and diluted co-flow

P. R. Medwell, P. A.M. Kalt, B. B. Dally

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

Abstract

The spatial distribution of OH and formaldehyde (H2CO) imaged by laser diagnostic techniques are presented. The measurements are of nonpremixed jet flames in a hot and highly diluted co-flow. These conditions emulate those of Moderate and Intense Low Oxygen Dilution (MILD) combustion. This paper presents results on the effect of O2 co-flow level and fuel dilution on the structure of the flames for a fixed jet Reynolds number. A reduction of O2 in the oxidant stream is shown to lead to a substantial suppression of both OH and H2CO levels. Within lifted flames, in comparison to the fluctuating levels of OH, H2CO levels remain constant. Although beyond the aim of the current investigation, a peripheral observation has been made that flames in a lower O2 co-flow stabilise at jet velocities which are lifted at higher O2 levels.

Original language	English (US)
Title of host publication	5th Asia-Pacific Conference on Combustion, ASPACC 2005: Celebrating Prof. Bob Bilger's 70th Birthday
Pages	325-328
Number of pages	4
State	Published - Dec 1 2005
Externally published	Yes

Cite this

@inproceedings{82edb646c36d4b1b9512a362c8bd01c5,

title = "Effect of fuel dilution on jet flames in a heated and diluted co-flow",

abstract = "The spatial distribution of OH and formaldehyde (H2CO) imaged by laser diagnostic techniques are presented. The measurements are of nonpremixed jet flames in a hot and highly diluted co-flow. These conditions emulate those of Moderate and Intense Low Oxygen Dilution (MILD) combustion. This paper presents results on the effect of O2 co-flow level and fuel dilution on the structure of the flames for a fixed jet Reynolds number. A reduction of O2 in the oxidant stream is shown to lead to a substantial suppression of both OH and H2CO levels. Within lifted flames, in comparison to the fluctuating levels of OH, H2CO levels remain constant. Although beyond the aim of the current investigation, a peripheral observation has been made that flames in a lower O2 co-flow stabilise at jet velocities which are lifted at higher O2 levels.",

author = "Medwell, {P. R.} and Kalt, {P. A.M.} and Dally, {B. B.}",

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year = "2005",

month = dec,

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language = "English (US)",

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T1 - Effect of fuel dilution on jet flames in a heated and diluted co-flow

AU - Medwell, P. R.

AU - Kalt, P. A.M.

AU - Dally, B. B.

N1 - Generated from Scopus record by KAUST IRTS on 2022-09-12

PY - 2005/12/1

Y1 - 2005/12/1

N2 - The spatial distribution of OH and formaldehyde (H2CO) imaged by laser diagnostic techniques are presented. The measurements are of nonpremixed jet flames in a hot and highly diluted co-flow. These conditions emulate those of Moderate and Intense Low Oxygen Dilution (MILD) combustion. This paper presents results on the effect of O2 co-flow level and fuel dilution on the structure of the flames for a fixed jet Reynolds number. A reduction of O2 in the oxidant stream is shown to lead to a substantial suppression of both OH and H2CO levels. Within lifted flames, in comparison to the fluctuating levels of OH, H2CO levels remain constant. Although beyond the aim of the current investigation, a peripheral observation has been made that flames in a lower O2 co-flow stabilise at jet velocities which are lifted at higher O2 levels.

AB - The spatial distribution of OH and formaldehyde (H2CO) imaged by laser diagnostic techniques are presented. The measurements are of nonpremixed jet flames in a hot and highly diluted co-flow. These conditions emulate those of Moderate and Intense Low Oxygen Dilution (MILD) combustion. This paper presents results on the effect of O2 co-flow level and fuel dilution on the structure of the flames for a fixed jet Reynolds number. A reduction of O2 in the oxidant stream is shown to lead to a substantial suppression of both OH and H2CO levels. Within lifted flames, in comparison to the fluctuating levels of OH, H2CO levels remain constant. Although beyond the aim of the current investigation, a peripheral observation has been made that flames in a lower O2 co-flow stabilise at jet velocities which are lifted at higher O2 levels.

UR - http://www.scopus.com/inward/record.url?scp=84878988742&partnerID=8YFLogxK

M3 - Conference contribution

SP - 325

EP - 328

BT - 5th Asia-Pacific Conference on Combustion, ASPACC 2005: Celebrating Prof. Bob Bilger's 70th Birthday

ER -

Effect of fuel dilution on jet flames in a heated and diluted co-flow

Abstract

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