Abstract
Analytical methods for calculations of the transport machinery are often insufficient especially when untypical granular materials are considered. Discrete Element Method (DEM) is a very useful numerical tool supporting designing and optimization of the transport equipment. However, to obtain reliable DEM simulation results an accurate set of input parameters values is needed. The most common calibration approach is to make use of a procedure where laboratory tests are performed and then the same experiments are numerically replicated in DEM. The article presents calibration of the DEM input parameters on the example of perlite D18-DN Based on the performed calibration, the model of perlite transport in a screw conveyor has been shown.
Highlights
Optimization of the design of machines and devices for the transport of bulk materials is aimed at reducing the costs of their production while maintaining quality and functionality
This paper presents the methodology for testing bulk materials in terms of their use for the calibration of the model created in the DEM environment and the calibration process on the example of granular material – D18-DN perlite
The process of calibration of input parameters of the DEM model is a factor that strongly determines the reliability of the final results of the simulation of the flow of bulk materials in transport machines
Summary
Optimization of the design of machines and devices for the transport of bulk materials is aimed at reducing the costs of their production while maintaining quality and functionality. The analytical approach to the design of machines and transport devices allows satisfactory accuracy to choose the characteristic dimensions of components, to predict efficiency and power demand, and to estimate the strength and durability of the device This approach does not provide any information about behavior of the bulk material during transport and interactions with equipment. In the field of bulk material simulation, the Discrete Element Method DEM is widely used [2,3, 6, 9, 12] It allows to simulate the behavior of granular materials with any physical properties subjected to various extortions results from the operating conditions of the considered device. (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl
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