Forced Convection In A Variable Section
Axisymmetric Channel With Different Porous
Layers And Heat Generation
Author(s)
E. Pilevne & A. Misirlioglu
Abstract
In the present study, the forced convection in an axisymmetric channel has been
investigated numerically. The channel, which contains different porous layers,
has variable cross sectional areas along the axis. The governing equations for
non-Darcy porous media are solved for the uniform inlet velocity profile and
uniform inlet temperature. The walls are kept at a constant temperature. The
porous medium at the middle of the channel has internal heat generation. This
kind of solution domain is aimed to model the phenomena in the porous burners.
The finite element method is employed to solve the governing equations. First,
the code is compared for the fully developed flow in the parallel channel. For
this purpose the maximum velocities at the channel axis and the Nusselt numbers
at the wall are compared with the literature. Having obtained the validated results
for the code, it is applied to the problem described above. The results will be
presented in terms of velocity and temperature profiles.
Keywords: porous layers, forced convection, FEM.
1 Introduction
Applications of porous media in engineering have constantly been growing in
last two decades. In particular, the heat transfer characteristics of the porous
medium is of high importance due to the applications in, for example, heat
exchangers, transport of heated or cooled fluids, micro-electronic cooling,
chemical processing equipment, and porous burners, etc. Apart from the
conventional burners, porous media burners provide many advantages in
especially industrial applications. Within this technology it is able to build more
Keywords
porous layers, forced convection, FEM.
Related Book
Other papers in this volume
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