twin-screw granulation

Discrete Element Method (DEM) simulations have the potential to provide particle-scale understanding of twin-screw granulators. This is difficult to obtain experimentally because of the closed, tightly confined geometry. An essential prerequisite for successful DEM modelling of a twin-screw granulator is making the simulations tractable, i.e., reducing the significant computational cost while retaining the key physics.

This paper presents a generic framework of Model Driven Design (MDD) with its application for a twin screw granulation process using a mechanistic-based population balance model (PBM).

This paper presents the application of a digital twin in industrial manufacturing with an impact pin mill and twin screw granulator as exemplar studies. A new particle breakage model subject to impact loading pertaining to the impact pin mill was developed, which enables the contribution of the normal and tangential velocity components to be rationalised. In the twin screw granulation, a coupled model with DEM and PBM is proposed with a new breakage kernel developed for the TSG. The application of digital twin is hoped to facilitate the understanding of particulate process and help transit from digital design to digital operation.