Experimental Study to Investigate the Flow Characteristics of a Supersonic Turbine Depending on the Relative Positions of Nozzle and Cascade

노즐과 익렬의 상대 위치에 따른 초음속 터빈의 유동특성에 대한 실험적 연구

  • 조종재 (부산대학교 대학원 항공우주공학과) ;
  • 김귀순 (부산대학교 항공우주공학과) ;
  • 정은환 (한국항공우주연구원 터보펌프팀)
  • Received : 2010.05.13
  • Accepted : 2010.06.13
  • Published : 2010.06.30

Abstract

Experiments were performed to investigate the flow characteristics of a partial admission supersonic turbine depending on the relative positions of nozzle and cascade. The flow was visualized by a Schlieren system. The static pressures at the turbine cascade inlet, passage and outlet were measured by pressure transducers. Highly complicated flow patterns including shocks, nozzle-cascade interaction and shock boundary layer interactions of the supersonic turbine were observed by the experiments. And the flow characteristics in the supersonic turbine as the relative positions were observed.

노즐에 대한 익렬의 위치가 따른 부분 흡입형 초음속 터빈 내부의 유동특성에 미치는 영향을 파악하고 그 특성을 살펴보기 위해 실험을 실시하였다. 터빈 익렬 내부의 유동 가시화를 위해 슐리렌 시스템을 사용하였으며, 압력변환기를 이용하여 터빈 익렬 내부의 정압력을 측정하였다. 실험을 통해 충격파를 포함한 복잡한 유동 형태와 유동박리, 충격파-경계층 상호작용 등을 관찰할 수 있었으며, 노즐에 대한 터빈 익렬 위치에 따른 터빈 내부의 유동특성을 파악할 수 있었다.

Keywords

References

  1. 김진한, 홍순삼, 정은환, 최창호, 전성민, "30톤급 액체로켓엔진용 터보펌프 개발현황," 한국추진공학회 2005년도 추계학술대회, 2005, pp.375-383
  2. Willard, R. and Westphal, "The design and cascade tests of free-contour $160^{\circ}$ turning supersonic-turbine-blade sections," NACA research memorandum, RM L57F21, 1962
  3. Thomas, P. and Moffitt, "Design and experimental investigation of a single stage turbine with a rotor entering relative Mach number 2," NACA research memorandum, RM E58F20a, 1958
  4. Colclough, C. D., "Design of turbine blades suitable for supersonic relative inlet velocities and the investigation of their performance in cascades: part II experiments, results and discussion," Journal of mechanical engineering science, Vol. 8 No. 2, 1966, pp.185-196 https://doi.org/10.1243/JMES_JOUR_1966_008_023_02
  5. Stratford, B. S. and Sansome, G. E., "Theory and tunnel tests of rotor blades for supersonic turbines," NACA research memorandum, R&M 3275, 1965
  6. Stratford, B. S. and Sansome, G. E., "The performance of supersonic turbine nozzles," NACA research memorandum, R&M 3273, 1962