Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
권호 표지
DOI QR코드

DOI QR Code

Acoustic Analysis in an Annular Gas Turbine Combustor (GT24) Network Modeling Approach

네트워크 모델링 기법을 이용한 환형 가스터빈 연소기(GT24)에서의 음향장 해석

  • 장재우 (강릉원주대학교 기계공학과) ;
  • 노현구 (인덕대학교 기계자동차학과) ;
  • 김대식 (강릉원주대학교 기계공학과)
  • Received : 2023.06.12
  • Accepted : 2023.08.01
  • Published : 2023.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this research, a network model was developed to predict combustion instability in an annular gas turbine combustor (GT24) for power generation. The model consisted of various acoustic elements such as several ducts and area changes which could represent a real combustor with a complex geometry, applied mass, momentum, and energy equations to each element. In addition, a one-dimensional network model through a cylindrical coordinate system has been proposed to predict various acoustic modes. As a result of the analysis, the key resonant frequencies such as longitudinal, circumferential, and complex modes were derived from the EV combustor of GT24, and the reliability of the current model was verified through comparison with the 3D Helmholtz solver.

Keywords

Acknowledgement

본 연구는 2022년 중부발전의 지원(제2022-현장-16호)을 받아 수행되었습니다.

References

  1. S. Park, U. Kim, J. Chung, J. Hong, S. Kim, D. Cha, "Effects of Hydrogen in SNG on Gas Turbine Combustion Characteristics", Journal of Hydrogen and New Energy, Vol. 23, No. 4, 2012, pp. 412~419.  https://doi.org/10.7316/KHNES.2012.23.4.412
  2. D. Kim, "Review on the Development Trend of Hydrogen Gas Turbine Combustion Technology", Journal of The Korean Society of Combustion, Vol. 24, No. 4, 2019, pp. 1~10.  https://doi.org/10.15231/jksc.2019.24.4.001
  3. Y. Joo, M. Kim, J. Park, S. Park, J. Shin, "Hydrogen Enriched Gas Turbine: Core Technologies and R&D Trend", Journal of Hydrogen and New Energy, Vol. 31, No. 4, 2020, pp. 351~362.  https://doi.org/10.7316/KHNES.2020.31.4.351
  4. N. Tekin, M. Ashikaga, A. Horikawa, H. Funke", Enhancement of Fuel Flexibility of Industrial Gas Turbine by Development of Innovative Hydrogen Combustion Systems", Gas Energy, 2(2018) 1~6. 
  5. S. Hong, D. Kim, "Combustion Instability Modeling in a Hydrogen-natural Gas Mixed Fuel Gas Turbine Combustor using a 3-Dimensional Finite Element Method Approach", Journal of ILASS-Korea, Vol. 27, No. 1, 2022, pp. 36~41.  https://doi.org/10.15435/JILASSKR.2022.27.1.36
  6. M. Choi, D. Shin, I. Gu, E. Cho, Y. Shin, "Comparisons of Flashback Characteristics of Hydrogen Flames by Combustion Models in an industrial Gas Turbine Combustor", Journal of The Korean Society of Combustion, Vol. 27, No. 4, 2022, pp. 40~49.  https://doi.org/10.15231/jksc.2022.27.4.040
  7. Y. Pyo, H. Park, S. Jung, D. Kim, "Acoustic Field Analysis using 1D Network Model in an Aero Gas Turbine Combustor", Journal of the Korean Society of Propulsion Engineers, Vol. 23, No. 2, 2019, pp. 38~45.  https://doi.org/10.6108/KSPE.2019.23.2.038
  8. G. Kim, H. Cho, D. Lee, H. Kim, C. Sohn, S. Lee, M. Kim, K. Ahn, "Experimental Study on Combustion Characteristics of a Swirl-stabilized Conical Burner", Journal of The Korean Society of Combustion, Vol. 24, No. 4, 2014, pp. 1~7.  https://doi.org/10.15231/jksc.2014.19.3.001
  9. F. Peter, Z. Martin, L. Rudolf, B. Stefano, and M. Christian, "Development and Design of Alstom's Staged Fuel Gas Injection EV Burner for NOx Reduction", ASME Turbo Expo, 2007, GT2007-27730. 
  10. J. Son, S. Hong, J. Hwang, M. Kim, D. Kim, "Acoustic Modeling in a Gas Turbine Combustor with Backflow Using a Network Approach", Journal of the Korean Society of Propulsion Engineers, Vol. 25, No. 5, 2021, pp. 18~26.  https://doi.org/10.6108/KSPE.2021.25.5.018
  11. S. Kim, D. Kim, "Analysis of Combustion Instabilities in a 2-stage Duct System using Transfer Functions", Journal of ILASS-Korea, Vol. 26, No. 4, 2021, pp. 182~188.  https://doi.org/10.15435/JILASSKR.2021.26.4.182
  12. J. Lim, D. Kim, "3D Acoustic Field Analysis in an Annular System under a Cold Flow Condition", Journal of the Korean Society of Propulsion Engineers, Vol. 21, No. 6, 2017, pp. 49~56.  https://doi.org/10.6108/KSPE.2017.21.6.049
  13. S.R. Stow, A.P. Dowling, "Thermoacoustic Oscillation in an Annular Combustor", ASME Turbo Expo 2001, New Orleans, Louisiana, U.S.A., ASME GT2001-0037, Jun, 2001. 
  14. G.J. Bloxsidge, A.P. Dowling, P.J. Langhorne, "Reheat Buzz: an Acoustically Coupled Combustion Instability. Part 2. Theory", Journal of Fluid Mechanics, Vol. 346, 1997, pp. 271~290. https://doi.org/10.1017/S0022112097006484