Theoretical simulation of the process of gravitational loading of a silo with grain through an open screw channel

Abstract

This article focuses on a theoretical modeling of the gravitational filling of the drums (silos) by corn in an open gravitational canal. It is know, that filled in the silos corn obtains different mechanical damages. It has a negative influence on the technological process of a long-term corn keeping. The injured and damaged corn gives off more moisture and heat, which leads to the caking of corn and its affect by the pests and diseases.
For a decrease of the damage of corn during its filling in silos it is necessary to design an operating element which could help the corn mass move in a downward direction without acceleration. An open U-shaped helical canal makes it possible. This operating element is placed on the inside of the drum. The move of corn mass in the operating element is described by equation of a state of the friable corn medium. The equation establishes interconnection between the pressure of corn particle, the speed of its displacement and the porosity of corn medium. During the move of corn mass in the U-shaped helical canal a kinetic energy of elementary volume is the energy of sliding movement, jitter (chaotic motion) and circulation of mass.
The mathematical pattern of friable corn stuff’s motion in the open U-shaped peripheral helical canal with variable pitch was developed on the base of such modeling. The mathematical pattern can be used for definition of the rational parameters of open U-shaped helical canal.