Tomography Data Processing for Multiphase Industrial Process Monitoring

Grudzień, Krzysztof; Chaniecki, Zbigniew; Romanowski, Andrzej; Nowakowski, Jacek; Sankowski, Dominik

doi:10.1142/9789814583725_0013

Cited by 1 publication

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“…The changes in the concentration of bulk solid materials during silo emptying process have a significant influence on the operational safety of the silo structure by increasing the local pressure on the silo wall and hopper [3]. The best measurements tools for the material concentration analysis are based on different visualization techniques, such as optical camera [18], X-ray Computed Tomography (CT) [1,11] and Electrical Capacitance Tomography (ECT) systems [9,10] are widely used to study different phenomena of the flow and for the observation of the concentration changes of the bulk solid during silo discharging process. In the presented study, we used the ultrafast electron beam X-ray CT scanner (ROFEX) from Helmholtz-Zentrum DresdenRossendorf, which has a very high temporal resolution system to monitor material changes concentration [7,8] Prior to filling the silo with a material, white (i.e.…”

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confidence: 99%

Study of Flow Behavior of Granular Material Inside Cylindrical Silo Using Ultrafast X-Ray Imaging Technique

Waktola

Bieberle

Barthel

et al. 2017

Image Processing &Amp; Communications

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This paper presents an application of an ultrafast electron beam X-ray CT scanner for investigating the gravitational flow behavior of granulates through cylindrical silo model. The CT scanner allows obtaining crosssectional images of the granular material distribution with a spatial resolution of approximately 1 mm and a time resolution of 2 kHz. In order to conduct a deep analysis of the granular flow concentration changes, two image processing algorithm steps were applied. The first step deals with preprocessing and re-centering stacks of raw images. The second step divides the preprocessed image into several concentric rings and calculates the mean value to study radial concentration changes. Independent analysis of granular concentration in each ring provides useful knowledge to study the silo discharging during mass flow and funnel flow.

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