Influence of aspect ratio on the distribution of porosity and velocity in columns of spheres
Journal
Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Journal Volume
32
Journal Issue
3
Pages
421-426
Date Issued
2009
Author(s)
Abstract
Abstract Internal imaging experiments are used to study assemblies of mono‐size spheres in a cylindrical flow cell. An optical measurement technique is adopted, whereby we scan a laser light sheet across the column composed of refractive index matched solid and liquid materials. To probe the influence of boundary confinement, we examine two different aspect ratios (ratios of cylinder diameter to sphere diameter), for which we compare radial distributions of bed porosity and liquid velocity. The measurements highlight the competing roles of near‐wall ordering and axial frustration in columns of low aspect ratios.
SDGs
Type
journal article