Large Eddy simulation of the Sandia Flame series (D-F) using the Eulerian stochastic field method

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Combustion and Flame

DOI:https://doi.org/10.1016/J.COMBUSTFLAME.2010.05.010· OSTI ID:21337860

Jones, W P; Prasad, V N ^[1]

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1. Department of Mechanical Engineering, Imperial College London, London (United Kingdom)

Three turbulent piloted methane jet flames with increasing levels of local extinction (Sandia Flames D-F) have been computed using Large Eddy simulation. The smallest unresolved scales of the flow, in which combustion occurs, are represented using the filtered probability density function method where the corresponding evolution equation is solved directly. A dynamic model for the sub-grid stresses together with a simple gradient diffusion approximation for the scalar fluxes is applied in conjunction with the linear mean square estimation closure for sub-filter scale mixing. An augmented reduced mechanism (ARM) derived from the full GRI 3.0 mechanism is incorporated to describe the chemical reaction. The results demonstrate the ability of the method in capturing quantitatively finite rate effects such as extinction and re-ignition in turbulent flames. (author)

• OSTI ID: 21337860
• Journal Information: Combustion and Flame, Vol. 157, Issue 9; Other Information: Elsevier Ltd. All rights reserved; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LARGE-EDDY SIMULATION
METHANE
COMBUSTION
FLAMES
STOCHASTIC PROCESSES
AIR
PROBABILITY DENSITY FUNCTIONS
APPROXIMATIONS
FLAME EXTINCTION
DIFFUSION
EQUATIONS
EVOLUTION
IGNITION
JETS
SCALARS
STRESSES
TURBULENCE
MATHEMATICAL MODELS
Joint pdf
Stochastic field method