Numerical modeling of turbulent combustion in premixed gases

Conference · Thu Jan 01 04:00:00 EST 1981 · Symp. (Int.) Combust., (Proc.); (United States)

OSTI ID:5313569

Ghoniem, A F; Chorin, A J; Oppenheim, A K

The influence of the exothermic process of combustion on the turbulent flow field where it occurs is studied by a numerical analysis based on Chorin's random vortex method. The algorithm models the action of elementary turbulent eddies and provides information on their cumulative effects without any distortion due to the computational technique. The technique is applied to the particular case of a combustion tunnel of rectangular cross-section where the flame is stabilized behind a back-facing step. For the sake of simplicity, the analysis is restricted by a formidable array of idealizations. The results mimick quite well the essential features of large scale turbulent pattern observed experimentally by means of schlieren photography with the use of a lean propane-air mixture as the flowing substance in the combustion tunnel. 10 refs.

• Research Organization: Univ of Calif, Berkeley
• OSTI ID: 5313569
• Report Number(s): CONF-800809-
• Conference Information: Journal Name: Symp. (Int.) Combust., (Proc.); (United States)
• Country of Publication: United States
• Language: English

Related Subjects

090110 -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALGORITHMS
ALKANES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
HYDROCARBONS
KINETICS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MATHEMATICS
NUMERICAL ANALYSIS
ORGANIC COMPOUNDS
PHOTOGRAPHY
PROPANE
REACTION KINETICS
SCHLIEREN METHOD
TURBULENCE