In the current poultry industry, the use of vertical silos for storage of avian poultry ration in the factories and in the farms is a fundamental factor, since they guarantee quality of product and rapid ness in the discharge process. However, several problems are detected in the storage and in the discharge of the ration due to the flaws in the project of silos, in which the flow properties of the products are neglected as a consequence of lack of knowledge of the flow theory. The objective of this work was to analyse the type of flow in prismatic silo with exentric discharge for two types of rations. The physical properties (fat content, moisture content and granulometry) and flow properties of (angle of internal friction, effective angle of internal friction, angle of friction of the product with the wall, density as a function of the consolidation, function flow and factor flow) were determined. The flow analysis was made visually and through photographic sequences, varying the discharge cross sectional area, ration height/side and storage time. The results demonstrated that the hopper pyramidal log with exentric discharge provided mass flow for the analyzed rations. The type of flow was influenced by the discharge cross sectional area and by the storage time.
discharge; aviculture; consolidation
