Abstract
Distinct Element Method (DEM) is an important numerical technique to analyze the motion of toner particles and carriers in electrophotography. With the DEM calculation, equations of motions for all particles considering the electromagnetic interactions are solved explicitly, and then it spends huge computing time. The parallel algorisms, such as particle decomposition method and spatial decomposition method have been introduced to DEM to overcome this difficulty. However they could not achieve enough parallel performance, especially the parallel efficiency will saturate under many CPUs. In this study, the force decomposition parallel method is engaged, and it realizes high scalable parallel efficiency. It is confirmed that highly accurate results were obtained by large scale development process simulation using force decomposition method.
