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The Lévêque Analogy: Does it Work for Solid Ceramic Sponges Too?

[+] Author Affiliations
Benjamin Dietrich, Matthias Kind, Holger Martin

Karlsruhe Institute of Technology, Karlsruhe, Germany

Paper No. IHTC14-22037, pp. 829-835; 7 pages
doi:10.1115/IHTC14-22037
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 6
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4941-5 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

In this paper experimental results of pressure drop and heat transfer for different ceramic sponges (variables: material, ppi number and porosity) are presented. The pressure drop data is correlated using an Ergun-type equation, which yields to an accuracy of 20%. The heat transfer coefficients were determined by a transient method and correlated in dimensionless form (Nusselt number) by a power law of Reynolds and Prandtl number. Furthermore the applicability of the well known Generalized Lévêque Equation (GLE) on solid ceramic sponges is checked. The GLE provides a correlation between pressure drop and heat transfer. The investigation shows that the tendency observed for the data corresponds with that of the theoretical model.

Copyright © 2010 by ASME
Topics: Ceramics

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