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Numerical Investigation of Flow and Heat Transfer in a Rotor-Stator Cavity with Centripetal Carbon Dioxide Through-Flow

Author

Listed:
  • Bo Hu

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
    Department of Mechanical Engineering, University of Duisburg-Essen, 47057 Duisburg, Germany)

  • Xuesong Li

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Xiaodong Ren

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Jiaxing Lu

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
    Key Laboratory of Fluid and Power Machinery, Xihua University, Ministry of Education, Chengdu 610039, China)

Abstract

A centrifugal carbon dioxide compressor is a kind of general machine with extensive applications. The geometry of the side chambers of the compressors can be determined by studying the rotor-stator cavity with centripetal through-flow. In this paper, numerical simulations were conducted to predict the characteristics of flow and heat transfer. Three different speeds of rotation and two axial gap widths were considered. The correlations of the core swirl ratios were determined by fitting the results for two axial gap widths. The amounts of the moment coefficients of the disk were predicted. In order to better analyze the temperature field, the radial distributions of the local heat transfer coefficient were numerically investigated. According to the simulation results, the average Nusselt number was found to be dominated by the turbulent flow parameter. It also seemed to be proportional to the moment coefficient at a fixed circumferential Reynolds number.

Suggested Citation

  • Bo Hu & Xuesong Li & Xiaodong Ren & Jiaxing Lu, 2019. "Numerical Investigation of Flow and Heat Transfer in a Rotor-Stator Cavity with Centripetal Carbon Dioxide Through-Flow," Energies, MDPI, vol. 12(13), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:13:p:2613-:d:246379
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    Cited by:

    1. Bo Hu & Xuesong Li & Xiaodong Ren & Jiaxing Lu, 2021. "Erratum: Hu et al. Numerical Investigation of Flow and Heat Transfer in a Rotor-Stator Cavity with Centripetal Carbon Dioxide Through-Flow. Energies 2019, 12 , 2613," Energies, MDPI, vol. 14(21), pages 1-2, October.

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