Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
COMPARISON BETWEEN DPM AND DDPM METHODS APPLIED TO SLURRY FILTRATION PROCESS
Submission Author:
Matheus Oliveira , MG
Co-Authors:
Matheus Oliveira, Cristiana Brasil Maia
Presenter: Matheus Oliveira
doi://10.26678/ABCM.COBEM2021.COB2021-1254
Abstract
The objective of computational analysis is to virtually represent a real physical behavior on a computer screen. Through computational simulation, it is possible to induce geometrical and numerical modifications reaching the most efficient operational parameters of equipment before its fabrication. A coupling of computational fluid dynamics and discrete element methods (CFD-DEM) could be performed in one-way and two-way analysis, with the objective to join two distinct methods of calculation in a single solver evaluating the iterations between fluid and particles. Discrete particle method (DPM) method uses one-way analysis calculating the influence of fluid in massless particles and dense discrete phase method (DDPM) method considers fluid influence in particles and particles influence in fluid, a two-way analysis. This paper uses both methods (DPM and DDPM) for a CFD-DEM coupled analysis studying a filtration equipment that transports slurry (fluid + particles) to different exits. A rotational valve restrains the main exit, creating a rising pressure location, which forces the slurry through a porosity region, with the objective to reduce the number of particles in the exiting water. The obtained results indicates that the precision needed to reach must be pointed to decide the most suitable simulation method, while physical results of fluid and particle flow and computational processing consumption varies.
Keywords
Slurry filtration, CFD-DEM, DPM, DDPM
