DEM-based modelling framework for spray-dried powders in ceramic tiles industry. Part I: Calibration procedure

被引：9

作者：

Tiscar, J. M. ^{[1
]}

Escrig, A. ^{[1
]}

Mallol, G. ^{[1
]}

Boix, J. ^{[1
]}

Gilabert, F. A. ^{[2
]}

机构：

[1] UJI, ITC, Castellon de La Plana, Spain

[2] Ghent Univ UGent, Fac Engn & Architecture, Dept Mat Text & Chem Engn, Tech Lane Ghent Sci Pk,Campus A, B-9052 Ghent, Belgium

来源：

POWDER TECHNOLOGY | 2019年 / 356卷

关键词：

Spray-dried powder; Rotating drum angle of repose; Calibration; Discrete element method; Scaling-up; NUMERICAL SIMULATIONS; DISCRETE; BEHAVIOR; PARAMETERS; SEGREGATION; VALIDATION; COLLISIONS; PACKING; REPOSE; ANGLE;

D O I：

10.1016/j.powtec.2019.08.053

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This work describes a combined experimental-numerical study to characterize fine spray-dried powder used in the ceramic tile pressing process. A DEM-based granular assembly is endowed with a new set of scaling laws that allows for simulating reliably industrial processes using a much lower number of granules. To do it, a calibration strategy relying on three experimental setups is proposed; (i) compression test of bulk for granule stiffness, (ii) dynamic angle of repose and (iii) image analysis of the powder motion in a rotating drum for the intergranular and granular-boundary sliding and rolling friction coefficients. In order to evaluate the powder motion in a rotating drum, a robust method relying on a direct image analysis is proposed. This methodology makes it possible to quantitatively assess the frictional properties of the powder in contact with different surface materials. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：818 / 831

页数：14

共 55 条

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[2]

[Anonymous], 2010, Calibration of DEM models for granular materials using bulk physical tests The University of Edinburgh

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