Analyzing bulk density and void fraction: B. Effect of moisture content and compression pressure

This study analyzes the effect of moisture content and compression pressure on bed void fraction in different materials. The void fractions of several materials, both spherical and non-spherical, solid and porous, with different particle sizes and densities, were evaluated as functions of moisture content and compression pressure. In our previous study, the Archimedes number was found to be an appropriate parameter to describe particle behavior. In this study, the Archimedes number was found to be an appropriate non-dimensional number to describe the effects of moisture content and compression pressure. A general equation was developed to evaluate the effect of moisture content on liquid bridge forces in solid and porous particles. Furthermore, a general equation was developed based on the Heckel model to describe compressed particulate beds. Finally, we studied the compression of wet particles. The general equations presented in this study agree well with the experimental values. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

This study investigates the impact of moisture content and compression pressure on bed void fraction in different materials. The Archimedes number was identified as a suitable parameter for describing particle behavior, as well as the effects of moisture content and compression pressure. General equations were developed to assess liquid bridge forces in solid and porous particles, as well as describe compressed particulate beds based on the Heckel model. The study also examined the compression of wet particles, with the general equations aligning well with experimental values.