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Experimental Study of Flameless Combustion in Gas Turbine Combustors

Li, Guoqiang; Gutmark, Ephraim J.; Stankovic, Dragan LU ; Overman, Nick; Cornwell, Michael; Fuchs, Laszlo LU and Milosavljevic, Vladimir LU (2006) 44th AIAA Aerospace Sciences Meeting and Exhibit, 2006 In [Host publication title missing]
Abstract
This paper presents experimental data on investigation of novel flameless combustors in

application of gas turbine engines at atmospheric conditions. Flameless combustion is

characterized by distributed flame and even temperature distribution under the conditions

of high preheat air temperature and sufficient large amount of recirculating low oxygen

concentration exhaust gas. Extremely low emissions of NOx, CO, and UHC are reported in

this paper for flameless combustion in a multiple jets premixed gas turbine combustor and a

swirling jet combustor. Measurements on the flame chemiluminescence, CO and NOx

emissions, acoustic pressure, temperature field, and velocity field reveal... (More)
This paper presents experimental data on investigation of novel flameless combustors in

application of gas turbine engines at atmospheric conditions. Flameless combustion is

characterized by distributed flame and even temperature distribution under the conditions

of high preheat air temperature and sufficient large amount of recirculating low oxygen

concentration exhaust gas. Extremely low emissions of NOx, CO, and UHC are reported in

this paper for flameless combustion in a multiple jets premixed gas turbine combustor and a

swirling jet combustor. Measurements on the flame chemiluminescence, CO and NOx

emissions, acoustic pressure, temperature field, and velocity field reveal the influence of

preheat temperature, inlet air mass flow rate, combustor exhaust nozzle contraction ratio,

and combustor chamber diameter on emissions and combustion dynamics. The data indicate

that greater air mass flow rate, thus larger pressure drop, promotes the formation of

flameless combustion and lower NOx emissions for the same flame temperature. This

flameless combustor is in nature a premixed combustion which NOx emission is an

exponential function of the flame temperature regardless of different preheated

temperature. High preheated temperature and flow rate also helps in forming stable

combustion therefore are favorable for flameless combustion. The effects on emissions and

combustion dynamics from the combustor exhaust contraction and the combustion chamber diameter are also discussed. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
[Host publication title missing]
publisher
American Institute of Aeronautics and Astronautics
conference name
44th AIAA Aerospace Sciences Meeting and Exhibit, 2006
external identifiers
  • Other:AIAA paper no. 2006-546
  • Scopus:34250761522
language
English
LU publication?
yes
id
5d84cad7-a22f-4b26-b222-05d998f045c2 (old id 778156)
date added to LUP
2008-02-26 09:06:24
date last changed
2016-10-13 04:49:13
@misc{5d84cad7-a22f-4b26-b222-05d998f045c2,
  abstract     = {This paper presents experimental data on investigation of novel flameless combustors in<br/><br>
application of gas turbine engines at atmospheric conditions. Flameless combustion is<br/><br>
characterized by distributed flame and even temperature distribution under the conditions<br/><br>
of high preheat air temperature and sufficient large amount of recirculating low oxygen<br/><br>
concentration exhaust gas. Extremely low emissions of NOx, CO, and UHC are reported in<br/><br>
this paper for flameless combustion in a multiple jets premixed gas turbine combustor and a<br/><br>
swirling jet combustor. Measurements on the flame chemiluminescence, CO and NOx<br/><br>
emissions, acoustic pressure, temperature field, and velocity field reveal the influence of<br/><br>
preheat temperature, inlet air mass flow rate, combustor exhaust nozzle contraction ratio,<br/><br>
and combustor chamber diameter on emissions and combustion dynamics. The data indicate<br/><br>
that greater air mass flow rate, thus larger pressure drop, promotes the formation of<br/><br>
flameless combustion and lower NOx emissions for the same flame temperature. This<br/><br>
flameless combustor is in nature a premixed combustion which NOx emission is an<br/><br>
exponential function of the flame temperature regardless of different preheated<br/><br>
temperature. High preheated temperature and flow rate also helps in forming stable<br/><br>
combustion therefore are favorable for flameless combustion. The effects on emissions and<br/><br>
combustion dynamics from the combustor exhaust contraction and the combustion chamber diameter are also discussed.},
  author       = {Li, Guoqiang and Gutmark, Ephraim J. and Stankovic, Dragan and Overman, Nick and Cornwell, Michael and Fuchs, Laszlo and Milosavljevic, Vladimir},
  language     = {eng},
  publisher    = {ARRAY(0xa78cd38)},
  series       = {[Host publication title missing]},
  title        = {Experimental Study of Flameless Combustion in Gas Turbine Combustors},
  year         = {2006},
}