희박-과농 메탄 화염의 상호작용에 관한 수치해석적 연구

DOI QR코드

DOI QR Code

이승동;정석호
Lee, Seung-Dong;Jeong, Seok-Ho

  • 발행 : 1996.01.01

초록

Interaction of flames in a lean-rich concentration field is studied numerically adopting a counterflow as a model problem. Detailed kinetic mechanism is adopted in analyzing the structure of various type of flames which can be found in lean-rich interaction. Flow field is simplified to quasi one-dimensional by using boundary layer approximation and similarity formulation. Triple flames are identified and its structure shows that a diffusion flame is located in the middle of two premixed flames. Such a diffusion flame is formed by $H_2$ and CO generated from the rich premixed flame and $O_2$ leaked from the lean premixed flame. The flame position can be identified either from the hydrogen production rate or the heat release rate. Transition from single diffusion flame to triple flame is observed as degree of premixing is increased.

키워드

화염의 상호작용;삼중 화염;스트레치 화염;대향류