TIME-AVERAGED MODELLING OF CFBS – ANALYSIS OF THE TERMS IN THE MOMENTUM EQUATIONS

Publication Year:
2010
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Downloads 240
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Repository URL:
http://dc.engconfintl.org/fluidization_xiii/95
Author(s):
Kallio, Sirpa; Seppälä, Maiju; Taivassalo, Veikko
Tags:
CFB; CFD; REACTOR MODELING & SIMULATION Ⅰ; Chemical Engineering; Engineering
article description
The features of the terms in the time-averaged momentum equation for the solid phase are examined for three CFB units ranging from a laboratory-scale unit to a small CFB boiler. The CFD simulations were based on the Eulerian granular model of the Fluent software. The time-averaged terms calculated during the time dependent simulations are analysed and conclusions on their relative importance are drawn. An analysis of the terms in the vertical solids momentum equation in the central region of a CFB is presented.