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ISSN Печать: 1093-3611
ISSN Онлайн: 1940-4360
Indexed in
MEASUREMENT OF DARCY AND FORCHHEIMER COEFFICIENTS FOR SILICA SAND BEADS
Краткое описание
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 it is showed that the main silica sand morphometric properties - granulometry, porosity, Darcy and Forchheimer coefficients - strongly influence the fuse operation. The measurements of the Darcy and Forchheimer coefficients are 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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Bussière W, Rochette D, Velleaud G, Latchimy T, Gelet J L, Gentils F, Perez-Quesada J C, Rambaud T, André P, Experimental study of HBC fuses working at short and medium pre-arcing times, Journal of Physics D: Applied Physics, 41, 19, 2008. Crossref
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Bussière W, Electric fuses operation, a review: 1. Pre-arcing period, IOP Conference Series: Materials Science and Engineering, 29, 2012. Crossref
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Bussière W, Electric fuses operation, a review: 2. Arcing period, IOP Conference Series: Materials Science and Engineering, 29, 2012. Crossref
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Nield Donald A., Bejan Adrian, Mechanics of Fluid Flow Through a Porous Medium, in Convection in Porous Media, 2017. Crossref
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Bussière W., Rochette D., Clain S., André P., Renard J.B., Pressure drop measurements for woven metal mesh screens used in electrical safety switchgears, International Journal of Heat and Fluid Flow, 65, 2017. Crossref