Volume 23 Issue 3
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JI Guo-jian, JI Hong-hu. Numerical and experimental investigation of pressure loss and critical sealing characteristics of straight-through labyrinth seals[J]. Journal of Aerospace Power, 2008, 23(3): 415-420.
Citation: JI Guo-jian, JI Hong-hu. Numerical and experimental investigation of pressure loss and critical sealing characteristics of straight-through labyrinth seals[J]. Journal of Aerospace Power, 2008, 23(3): 415-420.
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Numerical and experimental investigation of pressure loss and critical sealing characteristics of straight-through labyrinth seals

  • College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • Received Date: 2007-03-26
  • Rev Recd Date: 2007-05-30
  • Publish Date: 2008-03-28
    Abstract
  • Numerical and experimental investigation of pressure loss and critical sealing characteristics of straight-through labyrinth seal has been made.The results show that the RNG k-ε turbulence model is suited to predict the flow of labyrinth seal.The flow of the last tooth is choked when the pressure ratio between the upstream and downstream of the labyrinth seal reaches a critical value.With the increase of the pressure ratio the critical cross moves towards the upstream of the last tooth and the true flow cross area is increased simultaneously,which leads to increase of the leakage.When the total pressure is fixed,the pressure distributed between the teeth decreases linearly along the flow direction and the slope of the curve of the ratio of the pressure between the teeth to the total pressure is related to the total pressure.

     

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    • References(9)
  • [1]
    塔鲁达纳夫斯基.非接触密封[M].北京:机械工业出社,1986:155-160.
    [2]
    Morrison G L.3-D laser anemometer measurements in a labyrinth seal[J].Journal of Engineering for Gas Turbines and Power,1991,113:119-125.
    [3]
    Rhode D L.Prediction of incompressible flow in labyrinth seals[J].Journal of Fluids Engineering,1986,108:19-25.
    [4]
    Rhode D L.Simulation of subsonic flow through a generic labyrinth seal[J].Journal of Engineering for Gas Turbines and Power,1986,108:674-680.
    [5]
    黄守龙.直通式迷宫静态工作特性的实验研究[J].弹道学报,1994,21(3):43-48.HUANG Shoulong.Experiment study on static features for straight-through labyrinth[J].Journal of Ballistics,1994,21(3):43-48.
    [6]
    吴丁毅.直通式篦齿封严特性的实验研究[J].推进技术,1997,18(3)124-27.WU Dingyi.An experimental investigation on seal character of straight-through labyrinth[J].Journal of PropulsionTechnology,1997,18(3):24-27.
    [7]
    吴丁毅.两种常见篦齿密封和临界特性的分析与比较[J].航空动力学报,1997,12(4):397-401.WU Dingyi.Comparison between two kinds of conventional labyrinth[J].Journal of Aerospace Power,1997,12(4):397-401.
    [8]
    David C J.Abradable stator gas turbine labyrinth seals:Part 2-Numerical modeling of differing seal ge-ometries and the construction of a second generation design tool[R].AIAA-2002-3937.
    [9]
    Stocker H L,Cox D M.Aerodynamic performance of conventional and advanced design labyrinth seals with solidsmooth,abradable,and honeycomb lands[R].NASA,CR135307,1977:3-5.
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