NDLI: A Non-Adiabatic Flamelet Progress–Variable Approach for LES of Turbulent Premixed Flames

Content Provider	Springer Nature Link
Author	Cecere, Donato Giacomazzi, Eugenio Picchia, Franca R. Arcidiaco, Nunzio Donato, Filippo Verzicco, Roberto
Copyright Year	2010
Abstract	A progress variable/flame surface density/probability density function method has been employed for a Large Eddy Simulation of a CH4/Air turbulent premixed bluff body flame. In particular, both mean and variance of the progress variable are transported and subgrid spatially filtered gradient contributes to model the flame surface density (that introduces the effect of the subgrid flame reaction zone) and to presume a probability density function (that introduces the effect of subgrid fluctuations on chemistry). Chemistry is preliminarly tabulated in terms of laminar premixed flames and enthalpy is included as a new coordinate in their tabulation to take into account heat losses in the flowfield. Then, the PDF is used to build a turbulent flamelet library. The filtered mass, momentum, enthalpy and scalar equations mentioned above are integrated by an explicit scheme using finite differences, 2nd–order accurate in space and third order in time, over a cylindrical non-uniform grid using a staggered mesh. The bluff-body geometry is modelled by using the Immersed Boundary Method. The numerical predictions are compared with the available experimental data.
Starting Page	667
Ending Page	688
Page Count	22
File Format	PDF
ISSN	13866184
Journal	Flow, Turbulence and Combustion
Volume Number	86
Issue Number	3-4
e-ISSN	15731987
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-01-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Premixed turbulent flame Large Eddy Simulation Progress variable Flame surface density Probability density function Immersed Boundary Method Engineering Thermodynamics, Heat and Mass Transfer Automotive Engineering Fluid- and Aerodynamics Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry Chemical Engineering

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