The Permeability of Screen Wicks

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An experimental study was performed on the permeability of screen wicks using water. An equation for the wick porosity influencing the permeability was also proposed based on a model of the screen geometry. In the present experiment, the screen mesh size, number of screen layers, packing condition of the screen and flow rate were varied. For the friction factor, a correlation C_f=A/Re was obtained ; here the coefficient A was related to the packing number ω defined by the ratio of n-layer thickness to n-times the single-layer thickness of the screen. Consequently, it was found that the permeability of the screen wicks could be predicted considerably well from the expression presented in this study and increased steeply with the increase in the packing number ω, which showed the degree of hold-down pressure for the screen wicks.

An experimental study was performed on the permeability of screen wicks using water. An equation for the wick porosity influencing the permeability was also proposed based on a model of the screen geometry. In the present experiment, the screen mesh size, number of screen layers, packing condition of the screen and flow rate were varied. For the friction factor, a correlation C_f=A/Re was obtained ; here the coefficient A was related to the packing number ω defined by the ratio of n-layer thickness to n-times the single-layer thickness of the screen. Consequently, it was found that the permeability of the screen wicks could be predicted considerably well from the expression presented in this study and increased steeply with the increase in the packing number ω, which showed the degree of hold-down pressure for the screen wicks.

収録刊行物

  • JSME international journal. Series B, Fluids and thermal engineering

    JSME international journal. Series B, Fluids and thermal engineering 34-Ⅱ(2), 212-219, 1991-05-15

    社団法人日本機械学会

各種コード

  • NII論文ID(NAID)
    110002493380
  • NII書誌ID(NCID)
    AA10680596
  • 本文言語コード
    ENG
  • 資料種別
    Journal Article
  • ISSN
    09148817
  • データ提供元
    NII-ELS  IR 
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