Powered Addition Applied To The Fluidisation
Of A Packed Bed
Author(s)
P. D. de Wet, B. M. Halvorsen, & J. P. du Plessis
Abstract
Upon analysis of a set of collected data of Newtonian flow through a porous
medium, it is evident that asymptotes exist for some variable dependencies in the
transition from packed to fluidised bed. The transition between such asymptotes
is governed, amongst others, by parameters such as particle size, particle size
distribution, superficial gas velocity and bed height. The powered addition to a
power, s, of such asymptotes f0 and f∞, leads to a single correlating equation
that is applicable over the whole range of flow rates, namely f s = f s
0 + f s∞.
This procedure circumvents the introduction of ad hoc curve fitting measures
in the cross-over regions between the asymptotes and subsequent, unwanted
jumps in piecewise fitted correlative equations for the dependent variable(s). The
aforementioned method of powered addition is applied to the experimental data
and the outcomes are discussed.
Keywords
Related Book
Other papers in this volume
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