Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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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
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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.

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