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Article Dans Une Revue High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes Année : 2006

Measurements of Darcy and Forchheimer coefficients for silica sand beads

Résumé

High Breaking Capacity fuses are widely used to withdraw the energy brought by an electric fault current. One of the main constituent elements of a HBC fuse is the arc quenching material, silica sand in our case. During the arc quenching by the fuse, a plasma is generated due to the fusion and the vaporization of the fuse element (Ag) and the silica sand (SiO2). The plasma resulting from the dissociation of Ag and SiO2 is surrounded by a fused silica viscous sheath itself surrounded by silica sand grains. In this study we show that the main silica sand morphometric properties – granulometry, porosity, Darcy and Forchheimer coefficient – strongly influence the fuse operation. The measurements of the Darcy and Forchheimer coefficients is described, and the results are given for silica sand beads and glass sphere beads. The influence of the morphometric properties is discussed taking into consideration already published data concerning pressure, temperature and electron density of the plasma generated during the fuse operation.
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Dates et versions

hal-00022735 , version 1 (13-04-2006)

Identifiants

  • HAL Id : hal-00022735 , version 1

Citer

William Bussiere, David Rochette, Thierry Latchimy, Gérard Velleaud, Pascal André. Measurements of Darcy and Forchheimer coefficients for silica sand beads. High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, 2006, 10, Issue 1, pp.55-78. ⟨hal-00022735⟩
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