NDLI: Large Eddy Simulation of a Lean Gas Turbine Model Combustor

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Staufer, M. Janicka, J.
Copyright Year	2009
Abstract	Partially premixed flames although common on many technical devices are difficult to model in numerical simulations. In this paper a Large Eddy Simulation of a lean combustor is presented. To account for mixing effects in case of partially premixed combustion, a suitable extension to the well known coherent flame model (CFM) is applied. The turbulent reaction rate of the partially premixed flame is approximated by solving an additional transport equation for the flame surface density which accounts for flame wrinkling effects as well as for the creation and destruction of flame surface due to stretch and strain effects. The variation of stoichiometry in the flame is accounted for by using a suitable presumed PDF methodology. The pdf-model represents finite rate, as well as non-equilibrium chemistry effects in the flame. The model has been validated against experimental data. The results show an overall reasonable agreement with experimental data, both in profile shapes as well as peak values.
Sponsorship	International Gas Turbine Institute
Starting Page	595
Ending Page	601
Page Count	7
File Format	PDF
ISBN	9780791848838
DOI	10.1115/GT2009-59725
e-ISBN	9780791838495
Volume Number	Volume 2: Combustion, Fuels and Emissions
Conference Proceedings	ASME Turbo Expo 2009: Power for Land, Sea, and Air
Language	English
Publisher Date	2009-06-08
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Stoichiometry Flames Chemistry Turbulence Gas turbines Large eddy simulation Computer simulation Equilibrium (physics) Combustion Shapes Combustion chambers Density
Content Type	Text
Resource Type	Article

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