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Pressure Distribution During Binder Burnout in Three-dimensional Porous Ceramic Bodies with Anisotropic Permeability

Published online by Cambridge University Press:  31 January 2011

Stephen J. Lombardo  and
Z. C. Feng
Stephen J. Lombardo
Affiliation:
Department of Chemical Engineering, University of Missouri—Columbia, Columbia, 65211
Z. C. Feng
Affiliation:
Department of Mechanical and Aerospace Engineering, University of Missouri—Columbia, Columbia, 65211
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Abstract

The flow of gas-phase products in three-dimensional porous bodies was modeled for the case when a source term is present. Analytical solutions to the governing partial differential equations were obtained for bodies of parallelepiped and cylindrical geometry. An important feature of the model is that it treats the case where the permeability in the body may be anisotropic. The evolution of pressure within the body depends on a number of parameters, including the rate of production of gas-phase species, and on the dimensions of the body. The model is thus able to describe the pressure within a porous ceramic body arising from flow during a number of elevated-temperature processing operations such as drying, binder burnout, and sintering.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 6 , June 2002 , pp. 1434 - 1440
Copyright
Copyright © Materials Research Society 2002

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