Material Properties in Cake Filtration – Discrete Element Simulation of Compression‐Permeability Cells

Abstract

This simulation study investigates the impact of material properties on the behavior of compressible filter cakes. A compression-permeability (CP) cell is used as a standard experimental technique for characterizing compressible cakes. It contains a bidisperse particle packing simulated by the discrete element method. Using this setup, a set of crucial material properties is varied and their influence on the macroscopic compression behavior as described by established fitting equations is studied. Sobol's sensitivity analysis is performed, and the results indicate that Young's modulus, the coefficient of sliding friction, and the surface energy density have the strongest impact on cake solidity and compressibility.

A Study on the Physical Properties of Banana Straw Based on the Discrete Element Method

“…The elastic modulus of banana straw was 3.447 Mpa [13], measured by a compression experiment. The Poisson's ratio of banana straws was 0.4 [14]; the density of three groups of banana straws was measured by the buoyancy method [15], and the average result was 552.158 Kg•m −3 . The particle density was 1647.259 Kg•m −3 , calculated by the relationship between the total volume and the total mass of the particles in the discrete element model, and the densities of the different structures of banana straw were measured separately, and the results are shown in Table 1.…”

Numerical Study on the Granular Flow and Heat Transfer of a Calcium Looping CO2 Capture System

“…The continuum model (CM) and discrete element method (DEM) are two important tools for the simulation/modeling of granular flows. In the DEM, granules are considered as independent individuals to be analyzed [31,32]. The DEM was first proposed by Cundall and Strack [33], who used Newton's second law of motion with an explicit time integration method and the discrete body contact theory to describe a discrete body.…”