Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Characteristics of Low-Frequency Combustion-driven Oscillation in a Surface Burner

표면연소기의 저주파 연소진동음의 특성

  • 한희갑 (숭실대학교 대학원 기계공학과) ;
  • 이근희 (경기공업대학 기계공학부) ;
  • 권영필 (숭실대학교 기계공학과)
  • Published : 2000.12.01
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Abstract

The objective of this study is to examine the onset condition and the frequency characteristics of the low-frequency combustion oscillation in a surface burner. For this purpose, extensive parametric studies have been performed experimentally and the effects of size of each section, the equivalence ratio, and the entrance velocity on oscillatory behavior explored. The experimental results were discussed in comparison with the other combustors associated tilth the low-frequency combustion oscillation. The combustion mode is driven at high combustion rate by the lift of unstable flame near the lower limit of the combustible equivalence ratio. The oscillation frequency is dependent not on the burner geometry but on the equivalence ratio and the combustion load. Low-frequency combustion mode was formed to be divided into two different modes, named C1 and C2 respectively. Two modes occurred individually, simultaneously or transitionally according to the equivalence ratio and combustion load. The characteristics of low-frequency oscillation is different from each other depending on the type of combustors. The surface burner has also its own characteristics of low -frequency oscillation.

Keywords

References

  1. The Theory of Sound v.2 Rayleigh, J. W. S.
  2. National Advisory Committee for Aeronautics Res. Stability of System Containing a Heat Source the Rayleigh Criterion Chu, B. T.
  3. Trans. ASME v.75 A Study of Burner Oscillations of the Organ Type Putnam, A. A.;Dennis, W. R.
  4. J. Acoust. Soc. Am. v.78 no.4 Stability of the Rijke Thermoacoustic Oscillation Kwon, Y. P.;Lee B. H.
  5. 대한기계학회 논문집 v.11 no.2 기주의 열음향진동에 관한 연구 권영필;이병호
  6. J. Fluid Mech. v.232 Low-frequency Pressure Oscillations in a Model Ramjet Combustor Yu, K. H.;Trouve, A.;Daily, J. W.
  7. J. Fluid Mech. v.193 Reheat Buzz: an Acoustically Coupled Combustion Instability. Part 1. Experiment Langhorne, P.J.
  8. J. Flued Mech. v.193 Reheat Buzz: an Acoustically Coupled Combustion Instability. Part 2. Theory Bloxidge, G. J.;Dowling, A. P.;Langhorne, P. J.
  9. Combustion and Flame v.57 Influence of Confinement on Combustion Instabilities of Premixed Flames Stabilized on Axisymmetric Baffles Heitor, M. V.;Taylor, A. M. K. P.;Whitelaw J. H.
  10. Combustion and Flame v.82 Pulse Combustor Modeling Demonstration of the Importance of Characteristic Times Barr, P. K.;Keller, J. O.;Bramlette, T. T.
  11. 대한기계학회논문집 v.15 no.5 헬름홀쯔형 맥동연소기의 연소 및 작동 특성에 관한 실험적 연구 길상인;신현동
  12. 日本機械學會論文集 B編 v.63 no.614 二次元バルブレスパルス燃燒器の音響特性の實驗的および數値的評價: 數直解析手法と非燃燒時の音響特性の試み 石野洋二浪(外 3人)
  13. 한국소음진동공학회 춘계학술대회논문집 표면연소기의 연소진동에 관한 연구-(1)음향모드 김성근;한희갑;권영필
  14. 대한기계학회논문집 v.22 no.11 표면연소기의 연소진동음에 관한 연구 한희갑;권영필