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Flow dynamic in a packed bed filled with Ni‐Al 2 O 3 porous catalyst: Experimental and numerical approach
Author(s) -
Pashchenko Dmitry
Publication year - 2019
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16558
Subject(s) - pressure drop , packed bed , porosity , computational fluid dynamics , materials science , porous medium , fluent , mechanics , drop (telecommunication) , flow (mathematics) , catalysis , composite material , thermodynamics , chemistry , chromatography , engineering , mechanical engineering , physics , biochemistry
Numerical simulations and experiments have been carried out to explore the effect of particle shapes on the pressure drop and the loss factor in a packed fixed bed filled with a porous catalyst. The packed bed is presented by the Ni‐Al 2 O 3 catalyst of the different shapes. The commercial program ANSYS Fluent is used for the analysis; more than 20 mln cells are used for computational fluid dynamics (CFD) modeling. The catalyst particles were set as a porous medium with the viscous resistance coefficients and the inertial resistance coefficients. The comparison of the pressure drops between the experimental and simulation results show a good correlation with the divergence of results <8%. To determine the effect of the porosity properties of the medium on the numerical results, two cases of CFD modeling were realized (with taking into account the porous medium properties and without it). The discrepancy between results increases with an increasing gas flow rate.