Statistics of flame displacement speeds from computations of 2-D unsteady methane-air flames

Conference · Mon Dec 08 00:00:00 EST 1997

OSTI ID:671891

Peters, N; Terhoeven, P ^[1]; Chen, J H; Echekki, T ^[2]

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1. RWTH Aachen (Germany). Inst. fuer Technische Mechanik
2. Sandia National Labs., Livermore, CA (United States). Combustion Research Facility

Results of two-dimensional numerical computations of turbulent methane flames using detailed and reduced chemistry are analyzed in the context of a new theory for premixed turbulent combustion for high turbulence intensity. This theory defines the thin reaction zones regime, where the Kolmogorov scale is smaller than the preheat zone thickness, but larger than the reaction zone thickness. The two numerical computations considered in this paper fall clearly within this regime. A lean and a stoichiometric flame are considered. The former is characterized by a large ratio of the turbulence intensity to the laminar burning velocity and the latter by a smaller value of that ratio.

• Research Organization: Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 671891
• Report Number(s): SAND-98-8481C; CONF-980804-; ON: DE98052539; TRN: AHC2DT07%%49
• Resource Relation: Conference: 27. international symposium on combustion, Boulder, CO (United States), 2-7 Aug 1998; Other Information: PBD: 8 Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
METHANE
TWO-DIMENSIONAL CALCULATIONS
COMBUSTION KINETICS
FLAMES
TURBULENT FLOW
FUEL-AIR RATIO
FLAME PROPAGATION