A numerical algorithm is presented for the filling process of a cylindrical column with equilateral cylinders. The process is based on simplified mechanics - the elements are added one by one until the mechanical equilibrium is reached. The final structure is examined with respect to the global and local porosity distribution. Oscillating radial porosity profile is obtained in accordance with experimental data.
A research into microwave vacuum drying of rapeseeds in a fixed bed on a semi-technical scale was done. The temperature and moisture distribution for a different value of microwave power and pressure were determined. The economic analysis of the drying processes, description of equipment and measurement methodology were presented, too.