In order to analyse the influence of this structure on the fluid flow and the radial mass transfer properties, the study of sphere packings in cylindrical container and flow simulations at the pore scale are carried out.
Second, MRI is used to obtain measurements of liquid hold-up and wetting efficiency during co-current air water trickle flow in fixed beds of packings of cylindrical, porous alumina extrudate.
The granular DEM is used to generate random packings in a cylindrical vessel.
Overall, it appears that spherical packings hold significant advantages over cylindrical extrudates of comparable size.
Regular pebble packings exist also close to convex cylindrical walls even if the cylinder-to-pebble diameter ratio is about 1, characteristic of thermocouples within the pebble bed.
A discrete element method (DEM) is used to generate the random packings of spherical particles in the cylindrical column, and a methodology is proposed to calculate the radial porosity profile of the bed.
Recall that the dual packings are formed successively in our packing algorithm.
Fixed beds of cylindrical particles are important in chemical engineering applications, but their packing structures are not as well understood or as well characterized as sphere packings.
Void fraction and contacts in segregated packings, in which monosize spheres of different size are dropped into annular and core regions in the cylindrical enclosure, are also described.
Sphere packings, lattices, and groups.
