Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Swirl Number of Radial Swirler Design for Combustor in Aero Gas Turbine Engine

항공용 가스터빈엔진 연소기 내부 반경 방향 스월러의 스월수 계산

  • Choi, Myeung Hwan (Graduate School, Korea Aerospace University) ;
  • Shin, Dongsoo (Graduate School, Korea Aerospace University) ;
  • Yoon, Youngbin (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Koo, Jaye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • Received : 2019.08.12
  • Accepted : 2019.11.19
  • Published : 2019.12.01
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Abstract

Eco-friendly gas turbine combustors are getting attention due to emission regulations. Swirler is important design factor for flame stability and flashback inside the combustor. Design methods of the axial swirler and the radial swirler were discussed and the suitability of the swirl number calculation considering the geometric design variables and the flow loss was examined in the radial swirl for gas turbine combustor. The swirl number of flow was calculated by computational fluid dynamics and compared with swirl number according to each design method.

최근 배기가스규제로 인하여 친환경 가스터빈연소기가 주목받고 있다. 이때 연소기 내부의 스월러는 화염안정성 및 역화에 매우 중요한 설계 인자가 된다. 기존 연구자들이 제시한 축 방향 스월러와 반경 방향 스월러의 설계방법에 대하여 고찰하고 다양한 가스터빈용 반경 방향 스월러 중 기하학적 설계변수를 고려한 스월수 계산과 유동손실을 고려한 스월수 계산의 적합성을 검토하였다. 전산유체역학을 통해 스월유동의 스월수를 계산하고 설계방법에 따라 각각 비교하였다.

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References

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