Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
DOI QR코드

DOI QR Code

An Experimental Study on the Effect of Swirler Mass Flowrate and Flare Exit Length on Flow Patterns inside a Model Combustor Chamber

스월러 플레어 출구길이가 모델 챔버내 유동에 미치는 영향에 대한 실험적 연구

  • Received : 2015.12.01
  • Accepted : 2016.09.29
  • Published : 2016.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

A swirler is a flame holding device generating recirculation regions in a gas turbine combustor, and the flow pattern due to a swirler has major effects on the flame distributions, combustion efficiency, and characteristics of exhaust gas. An experimental study for a counter-rotating swirler has been conducted to find out effects of the mass flow rate ratio of the inner/outer swirler flow area, the pressure difference between the swirler inlet and outlet, and the flare exit length ratio on the flow patterns in a model combustion chamber by using PIV(Particle Image Velocimetry) technique.

스월러는 가스터빈 연소기내에 재순환영역을 형성시켜 보염역활을 수행하는 기구로 스월러에 의해 형성된 유동패턴은 연소실내 화염의 분포, 연소 효율, 배기가스등의 연소기 성능을 크게 좌우한다. 본 연구에서는 counter-rotating 스월러에 대해 입자영상유속계(Particle Image Velocimetry)를 이용하여 바깥쪽 스월러와 안쪽 스월러의 유량비가 다른 2종의 스월러 대한 스월러 양단 압력 차 변화 및 플레어 길이비에 따라 변화하는 모델 챔버내의 유동형태를 실험적으로 고찰하였다.

Keywords

References

  1. Lefebvre, A.H., Ballal, D.R., Gas Turbine Combustion, 3rd ed., CRC Press, Boca Raton, F.L., U.S.A., 2010.
  2. Wang, H.Y. and Samuelsen, M.S., "Influence of Hardware Design on the Flow Field Structures and the Patterns of Droplet Dispersion: Part I," Journal of Engineering for Gas Turbines and Power, Vol. 117, No. 2, pp. 282-289, 1995. https://doi.org/10.1115/1.2814092
  3. Estefanos, W., Tambe, S. and Jeng, S.M., "Effect of the Flare Expansion Angle on the Mean and Dynamic Behavior of Swirling Flow Generated by a Counter Rotating Radial-radial Swirler Using a Water Test Rig," ASME GT2015-43470, 2015.
  4. Burrus, D.L., Chahrour, C.A., Foltz, H.L., Sabla P.W., Seto, S.P. and Taylor, J.R., "Combustion System Component Technology Performance Report," NASA CR-168274, 1984.
  5. Mohanmmad, B.S., Cai, J. and Jeng, S.M., "Gas Turbine Single Annular Combustor Sector: Aerodynamics," 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Orlando, F.L., U.S.A., AIAA 2010-0579, Jan. 2010.