한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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터빈 로터의 익단 간극이 성능에 미치는 영향에 대한 수치해석적 연구

A Numerical Study on the Effect of Tip Clearance on the Performance of Turbine Rotor

  • 발행 : 2002.06.01
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초록

The effect of tip clearance is important part for turbomachinery performance. Tip leakage flow due to tip clearance is mixed with passage vortex. Large amount of loss is generated at the mixing region and overall performance of turbomachinery is reduced. Numerical calculation of the 1st stage rotor of GE7FA gas turbine is carried out to investigate tip clearance effect on performance, pitchwise variations of velocity profiles, pressure distributions and loss coefficients. A commercial code, CFX-TascFlow is validated in this study.

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참고문헌

  1. Kiock, R. et al., 1986, "The Transonic Flow Through a Plane Turbine Cascade as Measured in Four European Wind Tunnels," ASME Journal of Engineering for Gas Turbine and Power, Vol. 108, pp. 277-284. https://doi.org/10.1115/1.3239900
  2. Paulus Jr., D. M., 2001, "Entropy Production as a Predictive Performance Measure for Turbo-machinery", ASME Journal of Engineering for Gas Turbine and Power, Vol. 123, pp. 17-21. https://doi.org/10.1115/1.1339983
  3. Luo, J., 1995, "Three-Dimensional Navier-Stokes Computation of Turbine Nozzle Flow with Advanced Turbulence Models," ASME 95-GT-302.
  4. Zaccaria, 1994 "An Experimental Investigation into the Steady and Unsteady Flow Field in Axial Flow Turbine," The Pennsylvania State University.