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Tomography-Based Heat and Mass Transfer Characterization of Reticulate Porous Ceramics for High-Temperature Processing

[+] Author Affiliations
Sophia Haussener, Aldo Steinfeld

ETH Zurich, Zürich, Switzerland

Patrick Coray

Paul Scherrer Institute, Villigen, Switzerland

Wojciech Lipiński

University of Minnesota, Minneapolis, MN

Peter Wyss

EMPA Duebendorf, Duebendorf, Switzerland

Paper No. HT2009-88031, pp. 33-44; 12 pages
doi:10.1115/HT2009-88031
From:
  • ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
  • Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4356-7 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME

abstract

Reticulate porous ceramics employed in high-temperature processes are characterized for heat and mass transfer. The exact 3D digital geometry of their complex porous structure is obtained by computer tomography and used in direct pore-level simulations to numerically calculate their effective transport properties. Two-point correlation functions and mathematical morphology operations are applied for the geometrical characterization that includes the determination of porosity, specific surface area, representative elementary volume edge size, and mean pore size. Finite volume techniques are applied for conductive/convective heat transfer and flow characterization that includes the determination of the thermal conductivity, interfacial heat transfer coefficient, permeability, Dupuit-Forchheimer coefficient, residence time, tortuosity, and diffusion tensor. Collision-based Monte Carlo method is applied for the radiative heat transfer characterization that includes the determination of the extinction coefficient and scattering phase function.

Copyright © 2009 by ASME

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