부력을 받는 확산화염에 대한 수치 시뮬레이션

• 영문명: Numerical Simulation of Buoyant Diffusion Flame
• 발행기관: 한국화재소방학회
• 저자명: 오창보(Oh, Chang-Bo) 이의주(Lee, Eui-Ju)
• 간행물 정보: 『한국화재소방학회 학술대회논문집』2008년도 춘계학술논문발표회 논문집, 234~237쪽, 전체 4쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2008.04.30

영문 초록

A direct numerical simulation (DNS) code suitable for the prediction of buoyant jet diffusion flames was developed in this study. The thermodynamic and transport properties were evaluated using CHEMKIN package to enhance the prediction performance of the developed DNS code. A two dimensional simulations were performed for the jet diffusion flames in normal and zero-gravity conditions where the Froude numbers are 5 and infinity, respectively. The simulated buoyant jet diffusion flame in normal gravity showed that the unsteady and dynamic motion although the reynolds number is low (400). It was identified that the flame in normal gravity flickered periodically. The periodic motion of the flame disappeared in zero-gravity condition. The dynamic motion of the buoyant jet diffusion flame could be well understood by comparing the flame structures obtained by the simulations of normal and zero-gravity conditions.

키워드

Jet diffusion flame Buoyancy Numerical simulation