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논문 상세정보

음향공명기가 장착된 가스터빈 연소실의 음향장 해석

A Numerical Study on Acoustic Behavior in Gas Turbine Combustor with Acoustic Resonator

Abstract

Acoustic behavior in gas turbine combustor with acoustic resonator is investigated numerically by adopting linear acoustic analysis. Helmholtz-type resonator is employed as acoustic resonator to suppress acoustic instability passively. The tuning frequency of acoustic resonator is adjusted by varying its length. Through harmonic analysis, acoustic-pressure responses of chamber to acoustic excitation are obtained and the resonant acoustic modes are identified. Acoustic damping effect of acoustic resonator is quantified by damping factor. As the tuning frequency of acoustic resonator approaches the target frequency of the resonant mode to be suppressed. mode split from the original resonant mode to lower and upper modes appears and thereby complex patterns of acoustic responses show up. Considering mode split and damping effect as a function of tuning frequency, it is desirable to make acoustic resonator tuned to broad-band frequencies near the maximum frequency of those of the possible upper modes.

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참고문헌 (12)

  1. Lefebvre, A. H., 1998, Gas Turbine Combustion, 2nd Ed., Taylor & Francis 
  2. Harrje, D. J. and Reardon, F. H. (eds.), 1972, Liquid Propellant Rocket Combustion Instability, NASA SP-I94 
  3. NASA, 1974, Liquid Rocket Engine Combustion Stabilization Devices, NASA SP-8113 
  4. Laudien, E., Pongratz, R, Pierro, R. and Preclick, D., 1995, in Liquid Rocket Engine Combustion Instability (V. Yang, and W. E. Anderson, eds.), Progress in Astronautics and Aeronautics, Vol. 169, AIAA, Washington DC, pp. 377-399 
  5. Oberg, C. L., 1971, 'Combustion Stabilization with Acoustic Cavities,' Journal of Spacecraft and Rockets, Vol. 8, No. 12, pp. 1220-1225 
  6. Sohn, C. H. and Cho, H. C, 2004, 'Numerical Analysis of Acoustic Characteristics in Gas Turbine Combustor with Spatial Non-homogeneity,' KSME International Journal, Vol. 18, No.8, pp. 1461-1469 
  7. Zucrow, M. J. and Hoffman, J. D, 1977, Gas Dynamics, Vol. II, John Wiley & Sons, Inc., New York 
  8. Chapra, S. C. and Canale, R. P., 1989, Numerical Methods for Engineers, 2nd ed., McGraw-Hill, Singapore 
  9. ANSYS User's Manual for revision 5.0, 1993, Volume IV, Theory, Swanson Analysis Systems, Inc., Houston, PA 
  10. Sohn, C. H., 2002, 'A Numerical Study on Acoustic Behavior in Baffled Combustion Chambers,' Transcations of the KSME(B), Vol. 26, No.7, pp. 966-975 
  11. Sohn, C. H. and Kim, Y.-M., 2002, 'A Numerical Study on Acoustic Behavior in Combustion Chambers with Acoustic Cavity,' Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 30, No.4, pp. 28-37 
  12. Camporeale, S. M., Forte, A., Fortunato, B., Mastrovito, M. and Ferrante, A., 2004, 'Numerical Simulation of the Acoustic Pressure Field in an Annular Combustion Chamber with Helmholtz Resonators,' ASME paper GT2004-54139 

이 논문을 인용한 문헌 (4)

  1. Kim Hong Jip ; Kim Seong-Ku 2006. "A Study on the Acoustic Damping Characteristics of Acoustic Cavities in a Liquid Rocket Combustor" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, 30(1): 32~40 
  2. 2007. "" Journal of mechanical science and technology, 21(1): 153~161 
  3. 2008. "" Journal of mechanical science and technology, 22(4): 708~713 
  4. Kim, Hyeon-Jun ; Hong, Jung-Goo ; Kim, Dae-Hee ; Shin, Hyun-Dong 2008. "Numerical Simulation of Self-excited Combustion Oscillation in a Dump Combustor with Bluff-body" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, 32(9): 659~668 

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