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Numerical Computation of Flow Field in the Spiral Grooves of Steam Turbine Dry Seal

Received: 13 November 2017     Accepted: 1 December 2017     Published: 7 February 2018
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Abstract

Steam turbines, like other turbo-engines, require sealing elements, which prevent the working fluid escape outside of the turbine, causing power losses and environmental contamination. In this work the Flow Field in Spiral Grooves of Steam Turbine Dry Seals was determined using Computational Fluid Dynamics (CFD). The dry seal considered in this study has spiral grooves on the moving face. The flow field was computed for two different spiral groove inlet angle configurations (13 and 15 degrees). Additionally the opening force caused by the effect of the interaction of the rotational speed of the grooves and flow field was determined. Among the results it was found that the opening force generated on the seal walls is proportional to the opening angle of the spiral grooves. The spiral groove inlet angle of 15° generated major opening force.

Published in American Journal of Aerospace Engineering (Volume 4, Issue 5)
DOI 10.11648/j.ajae.20170405.11
Page(s) 54-58
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Flow Field, Spiral Grooves, Dry Seal, Turbine, Computational Fluid Dynamics

References
[1] B. Wang, “Numerical Analysis of a Spiral-groove Dry-gas Seal Considering Micro-scale Effects,” Chinese J. Mech. Eng., vol. 24, no. 01, p. 146, 2011.
[2] S. Li, Q. Zhu, J. Cai, Q. Zhang, and Z. Jin, “Regulation Performance of Regulatable Dry Gas Seal,” vol. 11, pp. 18–24, 2016.
[3] B. Wang, H. Zhang, and H. Cao, “Flow dynamics of a spiral-groove dry-gas seal,” Chinese J. Mech. Eng., vol. 26, no. 1, pp. 78–84, Feb. 2013.
[4] Y. Li, P. Y. Song, and H. J. Xu, “Performance Analyses of the Spiral Groove Dry Gas Seal with Inner Annular Groove,” Appl. Mech. Mater., vol. 420, pp. 51–55, Sep. 2013.
[5] J. Xu, X. Peng, S. Bai, X. Meng, and J. Li, “Experiment on wear behavior of high pressure gas seal faces,” Chinese J. Mech. Eng., vol. 27, no. 6, pp. 1287–1293, Oct. 2014.
[6] M. Ochiai, H. Sasaki, Y. Sunami, and H. Hashimoto, “Topological Optimization of Dry Gas Seals for Improving Seal Characteristics,” pp. 196–200, 2014.
[7] F. B. Ma, P. Y. Song, and J. Gao, “Numerical Analysis of Radial Groove Gas-Lubricated Face Seals at Slow Speed Condition,” Adv. Mater. Res., vol. 468–471, pp. 2304–2309, Feb. 2012.
[8] C. Xu, W. F. Huang, and X. F. Liu, “Tracking Property Analysis of a Dry Gas Seal Operating in Low Pressure Condition,” Appl. Mech. Mater., vol. 532, pp. 367–373, Feb. 2014.
[9] W. F. Xu, X. H. Li, and G. Ma, “A Method of Dual Number for the Aerodynamic Property Analysis of Gas-Lubricated Mechanism: Self-Pressurizing Thrust Bearings and Non-Contacting Face Seals,” Adv. Mater. Res., vol. 311–313, pp. 360–369, Aug. 2011.
[10] F. Sealing, “An Improved Design of Spiral Groove Mechanical Seal,” vol. 15, no. 4, pp. 499–506, 2007.
[11] J. Bin Hu, W. J. Tao, Y. M. Zhao, and C. Wei, “Numerical Analysis of General Groove Geometry for Dry Gas Seals,” Appl. Mech. Mater., vol. 457–458, pp. 544–551, Oct. 2013.
[12] I. Shahin, M. Gadala, M. Alqaradawi, and O. Badr, “Centrifugal Compressor Spiral Dry Gas Seal Simulation Working at Reverse Rotation,” Procedia Eng., vol. 68, no. July 2016, pp. 285–292, 2013.
[13] I. Shahin, “Dry Gas Seal Simulation with Different Spiral Tapered Grooves Dry Gas Seal Simulation with Different Spiral Tapered Grooves,” no. January 2014, 2016.
[14] I. Shahin, M. Gadala, M. Alqaradawi, and O. Badr, “Three Dimensional Computational Study for Spiral Dry Gas Seal with Constant Groove Depth and Different Tapered Grooves,” Procedia Eng., vol. 68, no. July 2016, pp. 205–212, 2013.
[15] X. P. Hu and P. Y. Song, “Theoretic Analysis of the Effect of Real Gas on the Performance of the T-Groove and Radial Groove Dry Gas Seal,” Appl. Mech. Mater., vol. 271–272, pp. 1218–1223, Dec. 2012.
Cite This Article
  • APA Style

    Juan Carlos Garcia, Ricardo Reyes Hernández, Oscar De Santiago Duran, José Alfredo Rodríguez Ramirez, Fernando Sierra Espinosa, et al. (2018). Numerical Computation of Flow Field in the Spiral Grooves of Steam Turbine Dry Seal. American Journal of Aerospace Engineering, 4(5), 54-58. https://doi.org/10.11648/j.ajae.20170405.11

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    ACS Style

    Juan Carlos Garcia; Ricardo Reyes Hernández; Oscar De Santiago Duran; José Alfredo Rodríguez Ramirez; Fernando Sierra Espinosa, et al. Numerical Computation of Flow Field in the Spiral Grooves of Steam Turbine Dry Seal. Am. J. Aerosp. Eng. 2018, 4(5), 54-58. doi: 10.11648/j.ajae.20170405.11

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    AMA Style

    Juan Carlos Garcia, Ricardo Reyes Hernández, Oscar De Santiago Duran, José Alfredo Rodríguez Ramirez, Fernando Sierra Espinosa, et al. Numerical Computation of Flow Field in the Spiral Grooves of Steam Turbine Dry Seal. Am J Aerosp Eng. 2018;4(5):54-58. doi: 10.11648/j.ajae.20170405.11

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  • @article{10.11648/j.ajae.20170405.11,
      author = {Juan Carlos Garcia and Ricardo Reyes Hernández and Oscar De Santiago Duran and José Alfredo Rodríguez Ramirez and Fernando Sierra Espinosa and Miguel Basurto Pensado},
      title = {Numerical Computation of Flow Field in the Spiral Grooves of Steam Turbine Dry Seal},
      journal = {American Journal of Aerospace Engineering},
      volume = {4},
      number = {5},
      pages = {54-58},
      doi = {10.11648/j.ajae.20170405.11},
      url = {https://doi.org/10.11648/j.ajae.20170405.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajae.20170405.11},
      abstract = {Steam turbines, like other turbo-engines, require sealing elements, which prevent the working fluid escape outside of the turbine, causing power losses and environmental contamination. In this work the Flow Field in Spiral Grooves of Steam Turbine Dry Seals was determined using Computational Fluid Dynamics (CFD). The dry seal considered in this study has spiral grooves on the moving face. The flow field was computed for two different spiral groove inlet angle configurations (13 and 15 degrees). Additionally the opening force caused by the effect of the interaction of the rotational speed of the grooves and flow field was determined. Among the results it was found that the opening force generated on the seal walls is proportional to the opening angle of the spiral grooves. The spiral groove inlet angle of 15° generated major opening force.},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - Numerical Computation of Flow Field in the Spiral Grooves of Steam Turbine Dry Seal
    AU  - Juan Carlos Garcia
    AU  - Ricardo Reyes Hernández
    AU  - Oscar De Santiago Duran
    AU  - José Alfredo Rodríguez Ramirez
    AU  - Fernando Sierra Espinosa
    AU  - Miguel Basurto Pensado
    Y1  - 2018/02/07
    PY  - 2018
    N1  - https://doi.org/10.11648/j.ajae.20170405.11
    DO  - 10.11648/j.ajae.20170405.11
    T2  - American Journal of Aerospace Engineering
    JF  - American Journal of Aerospace Engineering
    JO  - American Journal of Aerospace Engineering
    SP  - 54
    EP  - 58
    PB  - Science Publishing Group
    SN  - 2376-4821
    UR  - https://doi.org/10.11648/j.ajae.20170405.11
    AB  - Steam turbines, like other turbo-engines, require sealing elements, which prevent the working fluid escape outside of the turbine, causing power losses and environmental contamination. In this work the Flow Field in Spiral Grooves of Steam Turbine Dry Seals was determined using Computational Fluid Dynamics (CFD). The dry seal considered in this study has spiral grooves on the moving face. The flow field was computed for two different spiral groove inlet angle configurations (13 and 15 degrees). Additionally the opening force caused by the effect of the interaction of the rotational speed of the grooves and flow field was determined. Among the results it was found that the opening force generated on the seal walls is proportional to the opening angle of the spiral grooves. The spiral groove inlet angle of 15° generated major opening force.
    VL  - 4
    IS  - 5
    ER  - 

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Author Information
  • Faculty of Chemical Science and Engineering, Center for Engineering and Applied Sciences, Autonomous State University of Morelos, Morelos, Mexico

  • Faculty of Chemical Science and Engineering, Center for Engineering and Applied Sciences, Autonomous State University of Morelos, Morelos, Mexico

  • Faculty of Chemical Science and Engineering, Center for Engineering and Applied Sciences, Autonomous State University of Morelos, Morelos, Mexico

  • Faculty of Chemical Science and Engineering, Center for Engineering and Applied Sciences, Autonomous State University of Morelos, Morelos, Mexico

  • Faculty of Chemical Science and Engineering, Center for Engineering and Applied Sciences, Autonomous State University of Morelos, Morelos, Mexico

  • Faculty of Chemical Science and Engineering, Center for Engineering and Applied Sciences, Autonomous State University of Morelos, Morelos, Mexico

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