한국연소학회:학술대회논문집
- 한국연소학회 2002년도 제24회 KOSCO SYMPOSIUM 논문집
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- Pages.41-45
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- 2002
Zone-conditioned CMC 모델을 이용한 부분예혼합 난류연소 모델링
Modeling of Partially Premixed Turbulent Combustion by Zone-Conditioned Conditional Moment Closure
- 발행 : 2002.06.07
초록
The zone-conditioned CMC equations are derived by taking an unconditional average of the generic conservation equations multiplied by delta and Heaviside functions in terms of mixture fraction and reaction progress variable. The resulting equations are essentially in the same form as the single zone CMC equations except for separate flow fields for burned and unburned gas. The zone-conditioned two-fluid equations are applied to a stagnating turbulent premixed flame brush of Cheng and Shepherd[5l. It is shown that the flame stretch factor is of crucial importance to accurately reproduce the measured mean reaction progress variable and conditional velocities. Further work is in progress for the relationship between surface and volume averages and extension to partially premixed combustion on the basis of a triple flame structure, e. g. in a lifted turbulent diffusion flame.
키워드