Chameera Jayarathna
Department of Process, Energy and Environmental Technology, University College of South East Norway / Tel-Tek, Research institute, Porsgrunn, Norway
Britt Moldestad
Department of Process, Energy and Environmental Technology, University College of South East Norway
Lars-André Tokheima
Department of Process, Energy and Environmental Technology, University College of South East Norway
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http://dx.doi.org/10.3384/ecp1713876Published in: Proceedings of the 58th Conference on Simulation and Modelling (SIMS 58) Reykjavik, Iceland, September 25th – 27th, 2017
Linköping Electronic Conference Proceedings 138:10, p. 76-82
Published: 2017-09-27
ISBN: 978-91-7685-417-4
ISSN: 1650-3686 (print), 1650-3740 (online)
Fluidization characteristics such as the minimum
fluidization velocity and the bed pressure drop are
important for the design of an efficient fluidized bed.
These characteristics can be measured experimentally,
but also modelled by CFD simulations. The aim of this
study was to use experimental data to validate drag
models applied in the CFD software Barracuda.
Most of the drag models available in the literature
are validated against Geldart B or D particles and are not
necessarily suitable for Geldart A particles, such as the
zirconia particles used in the present study. However, by
adjusting one of the constants in the Wen-Yu and Ergun
drag models, it should be possible to apply these
equations also for Geldart A particles.
Data from an in-house built lab-scale fluidized bed
unit were used in the study. Reducing the k1 value in the
drag model from 180 to 47 gave a reasonable
representation of the minimum fluidization velocity and
the pressure drop over the bed.
CFD, CPFD, Barracuda, fluidization,
pressure drop, minimum fluidization velocity, MP-PIC
