Experimental and numerical imvestigation of a bubbling dense gas-solid fluidized bed

Lei Yang, Johan Padding, J.A.M. Kuipers

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Eulerian models incorporating kinetic theory of granular flow (KTGF) are widely used to simulate gassolids flow. The most widely used KTGF models have been derived for dilute flows of slightly inelastic, frictionless spheres. In reality, however, granular materials are mostly frictional. Attempts to quantify the friction effect have been somewhat limited. In this work, we focus on the validation of the KTGF model for rough spheres derived by Yang et al. (2016a, b) and the corresponding BCs from Yang et al. (2016c) for frictional walls. The
present TFM simulations are validated by comparing with magnetic particle tracking (MPT) experimental data and results obtained from discrete particle model (DPM) simulations of a pseudo-2D bubbling fluidized bed. Numerical results are compared with respect to particle distribution, solids velocities, and energy balance in the bed. On comparison with a simple kinetic theory derived by Jenkins and Zhang (2002), we find that present model improves the predictions for particle axial velocity and flux upon simulation of inelastic rough particles. In conclusion, the current KTGF model obtains excellent agreement with experiment and discrete particle simulation for the time-averaged bed hydrodynamics.
Original languageEnglish
Title of host publicationProceedings of the 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries
Subtitle of host publicationProgress in Applied CFD - CFD2017
EditorsJan Erik Olsen, Stein Tore Johansen
Place of PublicationOslo, Norway
PublisherSINTEF
Pages81-88
ISBN (Electronic)978-82-536-1544-8
Publication statusPublished - 2017
EventCFD 2017: 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries - Trondheim, Norway
Duration: 30 May 20171 Jun 2017

Publication series

NameSINTEF Proceedings
Volume2
ISSN (Electronic)2387-4295

Conference

ConferenceCFD 2017: 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries
CountryNorway
CityTrondheim
Period30/05/171/06/17

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