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Analysis of Heat Flux Distribution during Brush Seal Rubbing Using CFD with Porous Media Approach

Author

Listed:
  • Manuel Hildebrandt

    (Institute of Thermal Turbomachinery (ITS), Karlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, Germany)

  • Corina Schwitzke

    (Institute of Thermal Turbomachinery (ITS), Karlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, Germany)

  • Hans-Jörg Bauer

    (Institute of Thermal Turbomachinery (ITS), Karlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, Germany)

Abstract

This paper discusses the question of heat flux distribution between bristle package and rotor during a rubbing event. A three-dimensional Computational Fluid Dynamics (3D CFD) model of the brush seal test rig installed at the Institute of Thermal Turbomachinery (ITS) was created. The bristle package is modelled as a porous medium with local non-thermal equilibrium. The model is used to numerically recalculate experimentally conducted rub tests on the ITS test rig. The experimentally determined total frictional power loss serves as an input parameter to the numerical calculation. By means of statistical evaluation methods, the ma in influences on the heat flux distribution and the maximum temperature in the frictional contact are determined. The heat conductivity of the rotor material, the heat transfer coefficients at the bristles and the rubbing surface were identified as the dominant factors.

Suggested Citation

  • Manuel Hildebrandt & Corina Schwitzke & Hans-Jörg Bauer, 2021. "Analysis of Heat Flux Distribution during Brush Seal Rubbing Using CFD with Porous Media Approach," Energies, MDPI, vol. 14(7), pages 1-25, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:7:p:1888-:d:526185
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    Cited by:

    1. Yuxin Liu & Benzhuang Yue & Xiaozhi Kong & Hua Chen & Huawei Lu, 2021. "Effects of Front Plate Geometry on Brush Seal in Highly Swirling Environments of Gas Turbine," Energies, MDPI, vol. 14(22), pages 1-15, November.

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