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Characterization of Ceramic Foam Filters Used for Liquid Metal Filtration

Kennedy, Mark ; Zhang, Kexu ; Fritzsch, Robert ; Akhtar, Shahid ; Bakken, Jon ; Aune, Ragnhild

In: Metallurgical and Materials Transactions B, 2013, vol. 44, no. 3, p. 671-690

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    Titre
    • Characterization of Ceramic Foam Filters Used for Liquid Metal Filtration
    Auteur
    • Kennedy, Mark. Department of Material Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
    • Zhang, Kexu. Department of Material Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
    • Fritzsch, Robert. Department of Material Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
    • Akhtar, Shahid. Wire Rod Cast House, Hydro Aluminium, Karmøy, 4265, Håvik, Norway
    • Bakken, Jon. Department of Material Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
    • Aune, Ragnhild. Department of Material Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Metallurgical and Materials Transactions B, 2013, vol. 44, no. 3, p. 671-690. Springer US; http://www.springer-ny.com
    Autre version électronique
    Classification
    • Technologie, Sciences de l'ingénieur
    Identifiant OAI-PMH
    • oai:doc.rero.ch:314701
    Summary
    In the current study, the morphology including tortuosity, and the permeability of 50-mm thick commercially available 30, 40, 50,and 80pores per inch (PPI) alumina ceramic foam filters (CFFs) have been investigated. Measurements have been taken of cell (pore), window, and strut sizes, porosity, tortuosity, and liquid permeability. Water velocities from ~0.015 to 0.77m/s have been used to derive both first-order (Darcy) and second-order (Non-Darcy) terms for being used with the Forchheimer equation. Measurements were made using 49-mm "straight through” and 101-mm diameter "expanding flow field” designs. Results from the two designs are compared with calculations made using COMSOL 4.2a® 2D axial symmetric finite element modeling (FEM), as a function of velocity and filter PPI. Permeability results are correlated using directly measurable parameters and compared with the previously published results. Development of improved wall sealing (49mm) and elimination of wall effects (101mm) have led to a high level of agreement between experimental, analytic, and FEM methods (±0 to 7pct on predicted pressure drop) for both types of experiments. Tortuosity has been determined by two inductive methods, one using cold-solidified samples at 60kHz and the other using liquid metal at 50Hz, giving comparable results