Abstract— Among experimental devices, the Anton Paar Powder Rheometer is a tool for evaluating the bulk flow behavior of powder in dynamic conditions. This device measures the required torque for the rotation of the impeller inside the powder bed. The obtained experimental data can help to calibrate discrete element method (DEM) parameters. In order to speed up, larger, coarse-graining particles with proper scaling rules have to be applied. Some up-scaled simulations could produce a qualitatively similar trend to the experiment in one-tenth of the computing time. However, the applied coarsegraining scaling rules could not generate quantitatively the same results. In other words, the torque is not conserved by upscaling stiffness alone, which to understand is ongoing work.
Effect of coarse-graining on simulated powder flow properties
Assem Zharbossyn;Diego Barletta;Massimo Poletto;
2024
Abstract
Abstract— Among experimental devices, the Anton Paar Powder Rheometer is a tool for evaluating the bulk flow behavior of powder in dynamic conditions. This device measures the required torque for the rotation of the impeller inside the powder bed. The obtained experimental data can help to calibrate discrete element method (DEM) parameters. In order to speed up, larger, coarse-graining particles with proper scaling rules have to be applied. Some up-scaled simulations could produce a qualitatively similar trend to the experiment in one-tenth of the computing time. However, the applied coarsegraining scaling rules could not generate quantitatively the same results. In other words, the torque is not conserved by upscaling stiffness alone, which to understand is ongoing work.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
