Flamelet structure of radiating CH4-air flames. Annual report, August 1993-December 1994
The structure of laminar flamelets of CH4-air diffusion flames is presented. The predictions are based on the solution of a one-dimensional set of conservation equations with the mixture fraction, f, as the independent variable for different fixed values of the scalar dissipation rate, chi. A reduced three-step chemical kinetic mechanism is used for the whole range of f (0 less than or equal to f less than or equal to 1.0). The rates of the three steps are related to the rates of the elementary reactions of the full reaction mechanism. Radiative heat transfer effects are examined by using the optically thin and full radiation models. The results of the numerical computations yield values of the temperature and main species for different values of chi until extinction of the flamelet eventually occurs. Both the adiabatic flamelet and nonadiabatic flamelet with radiative heat loss are studied and their respective flamelet structures are presented.
- Research Organization:
- Wisconsin Univ., Milwaukee, WI (United States). Dept. of Mechanical Engineering
- OSTI ID:
- 198672
- Report Number(s):
- PB-96-128400/XAB; CNN: Contract GRI-5093-260-2667; TRN: 60241586
- Resource Relation:
- Other Information: PBD: Jan 1995
- Country of Publication:
- United States
- Language:
- English
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