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Volume 34 Issue 09
Sep.  2008
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Journal of Beijing University of Aeronautics and Astronautics  > 2008  >  34(09): 1080-1083.
Zhu Jinrong, Wu Hong, Tao Zhi, et al. Fluid flow and heat transfer characteristics in the leading of blades at rotating state[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(02): 261-264. (in Chinese)
Citation: Wang Zhili, Liang Xiaofeng, Song Fei, et al. Low hysteresis brush seal numerical simulations[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(09): 1080-1083. (in Chinese)
shu

Low hysteresis brush seal numerical simulations

  • 1.

    School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. The Second Research Institute, Sichuan Jiuzhou Electric Group Co., Ltd., Mianyang 621000, China

  • Received Date: 10 Sep 2007
  • Publish Date: 30 Sep 2008
    Abstract
  • In order to establish the calculation model of low hysteresis, an anisotropic porous model contained with the bristles bending deflections was employed based on the physical structure of low hysteresis brush seal. The effect of the bristles in the seal was considered a resistance force and was added into the N-S equation as a source term. The model was established on the basis of the finite volume method and the SIMPLE method. The pressure field,velocity vectors distribution and leakage were calculated and analysised. Based on the calculation date, the influence by the main parameters included structure and working condition was investigated. Compared with the common brush seal and low hysteresis brush seal, it is obvious that the low hysteresis brush seal can decrease the pressure between the bristle and the back ring and increase the bristle-s adaptability. In the working state it is beneficial to the seal system.

     

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    • References(1)
  • [1] Lelli D,Chew J W,Cooper P.Combined three-dementional fluid dynamic and mechanical modeling of brush seals[J]. Journal of Turbomachinery,2006,128:188-195 [2] Chew J W,Lapworth B L,Millener P J. Mathematical modeling of brush seals[J]. Int J Heat and Fluid Flow,1995,16(6):493-500 [3] Patankar S V. 传热与流体流动的数值模拟[M].张政译.北京:科学出版社,1984 Patankar S V. Numerical heat transfer and fluid flow[M].Translated by Zhang Zheng.Beijing:Science Press,1984(in Chinese) [4] Turner M T,Chew J W,Long C A. Experiment investigation and modeling of clearance brush seal[J]. Journal of Engineering for Gas Turbines and Power,1998,120:573-579 [5] 李人宪.有限体积法基础[M].北京:国防工业出版社,2005 Li Renxian. The based of finite volume method[M].Beijing:National Defence Industry Press, 2005(in Chinese)
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