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Flame investigation of a gas turbine central pilot body burner at atmospheric pressure conditions using oh plif and high-speed flame chemiluminescence imaging

Subash, Arman Ahamed LU ; Whiddon, Ronald LU ; Collin, Robert LU ; Aldén, Marcus LU ; Kundu, Atanu LU and Klingmann, Jens LU (2015) ASME 2015 Gas Turbine India Conference, GTINDIA 2015 In ASME 2015 Gas Turbine India Conference, GTINDIA 2015
Abstract

Experiments were performed on the central pilot body (RPLrich- pilot-lean) of Siemens prototype 4th generation DLE burner to investigate the flame behavior at atmospheric pressure condition when varying equivalence ratio, residence time and co-flow temperature. The flame at the RPL burner exit was investigated applying OH planar laser-induced fluorescence (PLIF) and high-speed chemiluminescence imaging. The results from chemiluminescence imaging and OH PLIF show that the size and shape of the flame are clearly affected by the variation in operating conditions. For both preheated and non-preheated co-flow cases, at lean equivalence ratios combustion starts early inside the burner and primary combustion comes to near completion inside the... (More)

Experiments were performed on the central pilot body (RPLrich- pilot-lean) of Siemens prototype 4th generation DLE burner to investigate the flame behavior at atmospheric pressure condition when varying equivalence ratio, residence time and co-flow temperature. The flame at the RPL burner exit was investigated applying OH planar laser-induced fluorescence (PLIF) and high-speed chemiluminescence imaging. The results from chemiluminescence imaging and OH PLIF show that the size and shape of the flame are clearly affected by the variation in operating conditions. For both preheated and non-preheated co-flow cases, at lean equivalence ratios combustion starts early inside the burner and primary combustion comes to near completion inside the burner if residence time permits. For rich conditions, the unburnt fuel escapes out through the burner exit along with primary combustion products and combustion subsequently restarts downstream the burner at leaner condition and in a diffuse-like manner. For preheated co-flow, most of the operating conditions yield similar OH PLIF distributions and the flame is stabilizing at approximately the same spatial positions. It reveals the importance of the preheating co-flow for flame stabilization. Flame instabilities were observed and Proper Orthogonal Decomposition (POD) is applied to time resolved chemiluminescence data to demonstrate how the flame is oscillating. Preheating has strong influence on the oscillation frequency. Additionally, combustion emissions were analyzed to observe the effect on NOX level for variation in operating conditions.

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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
ASME 2015 Gas Turbine India Conference, GTINDIA 2015
pages
12 pages
publisher
American Society of Mechanical Engineers
conference name
ASME 2015 Gas Turbine India Conference, GTINDIA 2015
external identifiers
  • Scopus:84964344186
ISBN
9780791857311
DOI
10.1115/GTINDIA2015-1212
language
English
LU publication?
yes
id
20ca4170-fc0f-43e9-857d-4faf4d5d5997
date added to LUP
2016-06-09 11:14:55
date last changed
2017-01-01 08:27:47
@inproceedings{20ca4170-fc0f-43e9-857d-4faf4d5d5997,
  abstract     = {<p>Experiments were performed on the central pilot body (RPLrich- pilot-lean) of Siemens prototype 4th generation DLE burner to investigate the flame behavior at atmospheric pressure condition when varying equivalence ratio, residence time and co-flow temperature. The flame at the RPL burner exit was investigated applying OH planar laser-induced fluorescence (PLIF) and high-speed chemiluminescence imaging. The results from chemiluminescence imaging and OH PLIF show that the size and shape of the flame are clearly affected by the variation in operating conditions. For both preheated and non-preheated co-flow cases, at lean equivalence ratios combustion starts early inside the burner and primary combustion comes to near completion inside the burner if residence time permits. For rich conditions, the unburnt fuel escapes out through the burner exit along with primary combustion products and combustion subsequently restarts downstream the burner at leaner condition and in a diffuse-like manner. For preheated co-flow, most of the operating conditions yield similar OH PLIF distributions and the flame is stabilizing at approximately the same spatial positions. It reveals the importance of the preheating co-flow for flame stabilization. Flame instabilities were observed and Proper Orthogonal Decomposition (POD) is applied to time resolved chemiluminescence data to demonstrate how the flame is oscillating. Preheating has strong influence on the oscillation frequency. Additionally, combustion emissions were analyzed to observe the effect on NOX level for variation in operating conditions.</p>},
  author       = {Subash, Arman Ahamed and Whiddon, Ronald and Collin, Robert and Aldén, Marcus and Kundu, Atanu and Klingmann, Jens},
  booktitle    = {ASME 2015 Gas Turbine India Conference, GTINDIA 2015},
  isbn         = {9780791857311},
  language     = {eng},
  pages        = {12},
  publisher    = {American Society of Mechanical Engineers},
  title        = {Flame investigation of a gas turbine central pilot body burner at atmospheric pressure conditions using oh plif and high-speed flame chemiluminescence imaging},
  url          = {http://dx.doi.org/10.1115/GTINDIA2015-1212},
  year         = {2015},
}