Experimental Research on Rigden-type Permeability Equation of Powder Bed.

DOI Open Access
  • SUGANUMA Akira
    Department of Industrial Chemistry, Faculty of Science & Technology, Science University of Tokyo
  • YOSHIMINE Ryoji
    Department of Industrial Chemistry, Faculty of Science & Technology, Science University of Tokyo
  • MATSUMOTO Yu
    Department of Industrial Chemistry, Faculty of Science & Technology, Science University of Tokyo
  • HAMADA Toshitaka
    Department of Industrial Chemistry, Faculty of Science & Technology, Science University of Tokyo

Bibliographic Information

Other Title
  • Ｒｉｇｄｅｎ型粉体層通気度式の実験的検討

Description

Permeability of seven kinds of JIS Test Powder beds was measured with N2 gas converted to the specific surface area of powder using various Rigden-type permeability equations including Kozeny-Carman equation.<br>Kozeny-Carman equation without molecular flow permeation was applicable only to powders coarser than about 10μm.<br>The experimental results with finer powders suggested that other permeation equations with proper evaluation of molecular flow mechanism should be used and that incorrect evaluation of molecular flow would cause certain non-linear error in the calculated surface area.<br>Experimental trials to seek an optimal value of the weight coefficient of molecular flow term in Rigden-type equation suggested that the value might be smaller than the Rigden's value, 0.515, which had been the smallest among the proposed value. Further careful study should be done because this result seemed to be too small and might be erroneous due to some experimental errors such as agglomeration and segregation during preparation of powder mixture.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390001204512517888
  • NII Article ID
    130003952390
  • DOI
    10.4164/sptj.36.672
  • ISSN
    18837239
    03866157
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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