한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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CFD를 사용한 비접촉식 가스 실의 입구 선회류 영향 해석

Analysis of Pre-Swirl Effect for Plain-Gas Seal Using CFD

  • 하태웅 (가천대학교 기계.자동차공학과)
  • Ha, Tae-Woong (Mechanical-Automotive Engineering Dept. Gachon University)
  • 투고 : 2013.01.31
  • 심사 : 2013.05.09
  • 발행 : 2013.06.01
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초록

In present 3D CFD study, the method for determining leakage and rotordynamic coefficients of a plain-gas seal is suggested by using the relative coordinate system for steady-state simulation. In order to find the effect of pre-swirl speed at seal inlet, pre-swirl velocity is included as a parameter. Present analysis is verified by comparison with results acquired from Bulk-flow analysis code and published experimental results. The results of 3D CFD rotordynamic coefficients of direct stiffness(K) and cross-coupled stiffness(k) show improvements in prediction. As pre-swirl speed at seal inlet increases, k also increases to destabilize system. However, pre-swirl speed at seal inlet does not show sensitivity to the leakage and rotordynamic coefficients of K and damping(C).

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참고문헌

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피인용 문헌

  1. vol.17, pp.2, 2014, https://doi.org/10.5293/kfma.2014.17.2.073