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- In relation to this article, we declare that there is no conflict of interest.
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Received October 8, 2022
Revised March 3, 2023
Accepted March 8, 2023
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Effects of Geometry and Operating Fluid on the Expansion Behavior of Liquid-Solid Fluidized Beds
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Abstract
Fluidized beds have been widely used in industrial applications, which in most of them, the operating fluid
is non-Newtonian. In this study, the combination of the lattice Boltzmann method (LBM) and the smoothed profile
method has been developed for non-Newtonian power-law fluids. The validation of the obtained model were
investigated by experimental correlations. This model has been used for numerical studying of changing the operating
fluid and geometrical parameters on the expansion behavior in liquid-solid beds with both Newtonian and nonNewtonian fluids. Investigations were performed for seven different geometries, one Newtonian, and two nonNewtonian fluids. The power-law index was in the range of 0.8 to 1, and the results for the Newtonian fluidized beds
show more porosity than the non-Newtonian ones. Furthermore, increasing the power-law index resulted in enhancing
the bed porosity. On the other hand, bed porosity was decreased by increasing the initial bed height and the density of
the solid particles. Finally, the porosity ratio in the bed was decreased by increasing the solid particle diameter.
Keywords
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