The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Critical Speed Analysis of a Small Gas Turbine Rotor

소형 가스터빈 회전체의 위험속도 해석

  • Received : 2009.01.13
  • Accepted : 2009.04.07
  • Published : 2009.06.01
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Abstract

This paper predicts the critical speeds of a 5MW industrial gas turbine by using commercial rotordynamic tool, DYNAMICS 4.3. The gas turbine is operated at 12,975 rpm on squeeze film dampers. The stiffness of the squeeze film dampers are estimated. The critical speeds of the gas turbine rotor are calculated to have a sufficient separation margin (2%) from the 1st bending mode and pass over 2 rigid body modes below 4,000 cpm. This paper discussed the coupling effects on the dynamic response of the gas turbine.

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References

  1. 김영철, 이동환, 심재호, 2006, '가스터빈엔진(GTE)의 동적설계기술현황,' 유체기계저널, 9권 5호, pp. 60～63 https://doi.org/10.5293/KFMA.2006.9.5.060

Cited by

  1. vol.13, pp.1, 2010, https://doi.org/10.5293/KFMA.2010.13.1.069