희박 예혼합 연소기에서 연료 조성이 화염전달함수 특성에 미치는 영향

• Published in: 한국분무공학회지 Vol. 20; no. 3; pp. 135 - 140
• Main Authors: 김진아, Jinah Kim, 김지환, Jihwan Kim, 이정원, Jeongwon Lee, 김대식, Daesik Kim
• Format: Journal Article
• Language: Korean
• Published: 한국분무공학회 30.09.2015; 한국액체미립화학회
• Subjects: Combustion Instability; Computational Fluid Dynamics; Flame Transfer Function; Lean Premixed Combustion; 기계공학; 연소 불안정; 전산 유체 역학; 화염 전달 함수; 희박 예혼합 연소
• ISSN: 1226-2277; 2288-9051
• DOI: 10.15435/JILASSKR.2015.20.3.135

Flame transfer function is used to determine the relationship between flow fluctuations and heat release perturbations in a lean premixed gas turbine combustor. The characteristics of flame transfer function are known to depend greatly on flame geometries in addition to other various flow conditions. However, it is not easy to experimentally measure the flame transfer function under various actual combustor operating conditions in terms of time and cost. The current research tries to model the flame transfer function using CFD(Computational Fluid Dynamics). From the results, it is shown that the calculated steady flame geometry can be exactly captured with consideration of the wall heat transfer and radiations. Also, unsteady analysis results show the close characteristics of the flame transfer function to the measured one in both gain and phase.