한국연소학회:학술대회논문집
- 한국연소학회 제26회 KOSCO SYMPOSIUM 논문집
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- Pages.223-227
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- 2003
혼합층에서의 확산화염에 대한 flame hole dynamics 모델
Flame Hole Dynamics Model of a Diffusion Flame in Mixing Layer
- 발행 : 2003.05.30
초록
The method of flame hole dynamics is demonstrated as a mean to simulate turbulent flame extinction. The core of the flame hole dynamics involves derivation of a random walk mapping for the flame holes, created by local quenching, between the burning and quenched states provided that the dynamic characteristics of flame edges is known. Then, the random walk mapping is projected to a background turbulent field. The numerical simulations are carried out with the further simplifications of flame string and unconditioned scalar dissipation rate. The simulation results show how the chance of partial quenching is influenced by the crossover scalar dissipation rate. Finally, a list of improvements, necessary to achieve more realistic turbulent flame quenching simulation, are discussed.