Numerical modeling of turbulent combustion

Technical Report · Tue Mar 01 04:00:00 EST 1983

OSTI ID:6876517

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

The work in numerical modeling is focused on the use of the random vortex method to treat turbulent flow fields associated with combustion while flame fronts are considered as interfaces between reactants and products, propagating with the flow and at the same time advancing in the direction normal to themselves at a prescribed burning speed. The latter is associated with the generation of specific volume (the flame front acting, in effect, as the locus of volumetric sources) to account for the expansion of the flow field due to the exothermicity of the combustion process. The model was applied to the flow in a channel equipped with a rearward facing step. The results obtained revealed the mechanism of the formation of large scale turbulent structure in the wake of the step, while it showed the flame to stabilize on the outer edges of these eddies.

• Research Organization: California Univ., Berkeley (USA)
• OSTI ID: 6876517
• Report Number(s): N-83-29233
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
CHEMICAL REACTIONS
COMBUSTION
COMPUTERIZED SIMULATION
DIFFUSION
FLAMES
FLUID FLOW
MATHEMATICAL MODELS
OXIDATION
SIMULATION
STOCHASTIC PROCESSES
THERMOCHEMICAL PROCESSES
TURBULENT FLOW