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Experimental and numerical study of flameless combustion in a model gas turbine combustor
KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Mechanics of Industrial Processes.
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2008 (English)In: Combustion Science and Technology, ISSN 0010-2202, E-ISSN 1563-521X, Vol. 180, no 2, 279-295 p.Article in journal (Refereed) Published
Abstract [en]

Flameless combustion is an attractive solution to address existing problems of emissions and stability when operating gas turbine combustors. Theoretical, numerical and experimental approaches were used to study the flameless gas turbine combustor. The emissions and combustion stability were measured and the limits of the flameless regime are discussed. Using experimental techniques and Large Eddy Simulation (LES), detailed knowledge of the flow field and the oxidation dynamics was obtained. In particular the relation between the turbulent coherent structures dynamics and the flameless oxidation was highlighted. A model for flameless combustion simulations including detailed chemistry was derived. The theoretical analysis of the flameless combustion provides 2 non-dimensional numbers that define the range of the flameless mode. It was determined that the mixture that is ignited and burnt is composed of similar to 50% of fresh gases and similar to 50% vitiated gases.

Place, publisher, year, edition, pages
2008. Vol. 180, no 2, 279-295 p.
Keyword [en]
flameless combustion, gas turbine, large eddy simulation, PIV, tabulated complex chemistry, large-eddy simulation, turbulent, coflow, vortex, jets, hot
Identifiers
URN: urn:nbn:se:kth:diva-17269DOI: 10.1080/00102200701739164ISI: 000252310500005OAI: oai:DiVA.org:kth-17269DiVA: diva2:335312
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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