Application of inserts for suppression of coupled dynamic–acoustic effects during confined granular flow in silos

The paper discusses methods to prevent coupled dynamic–acoustic effects during silo flow by means of inserts. Laboratory tests were carried out with a perspex and steel model silo with different inserts along the wall. As bulk solids, sand, polymer granulate and PET flakes were used. An effective method for a reduction of dynamic–acoustic phenomena during silo flow was elaborated. It was verified in large metal silos.