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Modelling and Characterisation of Granular Material Flow
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2017.
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-62670ISBN: 978-91-7583-853-3 (print)ISBN: 978-91-7583-854-0 (electronic)OAI: oai:DiVA.org:ltu-62670DiVA: diva2:1084360
Available from: 2017-03-28 Created: 2017-03-24 Last updated: 2017-03-28Bibliographically approved
List of papers
1. Experimental methodology for study of granular material flow using digital speckle photography
Open this publication in new window or tab >>Experimental methodology for study of granular material flow using digital speckle photography
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2016 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 155, 524-536 p.Article in journal (Refereed) Published
Abstract [en]

Granular material flow occurs in many industrial applications, and the characteristics of such flow is challenging to measure. Therefore, an experimental method that captures the flow behavior at different loading situations is desired.

In this work, experimental measurements of granular material flow with digital speckle photography (DSP) are carried out. The granular flow process is recorded with a high-speed camera; the image series are then analyzed using the DSP method. This approach enables field data such as displacement, velocity, and strain fields to be visualized during the granular material flow process. Three different scenarios were studied: free surface flow in a fill shoe, flow without a free surface in a fill shoe, and the rearrangement of material in a cavity. The results showed that it is possible to obtain field data of the motion of particles for all three scenarios with the DSP technique. The presented experimental methodology can be used to capture complex flow behavior of granular material.

National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-59694 (URN)10.1016/j.ces.2016.09.010 (DOI)000385600400045 ()2-s2.0-84987642035 (ScopusID)
Note

Validerad; 2016; Nivå 2; 2016-10-12 (andbra)

Available from: 2016-10-12 Created: 2016-10-12 Last updated: 2017-03-24Bibliographically approved
2. Study of Powder Filling Using Experimental and Numerical Methods
Open this publication in new window or tab >>Study of Powder Filling Using Experimental and Numerical Methods
2016 (English)Conference paper (Refereed)
Abstract [en]

This work covers both experimental measurements and numerical modelling of powder filling. Experimental measurements with digital speckle photography (DSP) are used to study powder flow during die filling. DSP measurements are realized by recording the powder filling process with a high speed video camera. The image series are then evaluated using an image correlation technique. By this, velocity and strain field data during the filling process can be visualised. DSP measurements are also supporting the development of a numerical model of the process. In this work the smoothed particle hydrodynamics (SPH) method is used to model the powder filling process. The numerical results are similar compared to the DSP measurements when comparing velocity fields during powder filling. The SPH model is further used to evaluate the density distribution after filling. Experimental measurements combined with simulation are powerful tools to increase the knowledge of the powder filling process.

National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-60482 (URN)
Conference
World PM2016 Congress & Exhibition, Hamburg, October 9-13 2016
Available from: 2016-11-16 Created: 2016-11-16 Last updated: 2017-03-24Bibliographically approved
3. Experimental and numerical study of granular material flow using particle methods: application in handling of potassium chloride (KCl)
Open this publication in new window or tab >>Experimental and numerical study of granular material flow using particle methods: application in handling of potassium chloride (KCl)
(English)Manuscript (preprint) (Other academic)
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-62669 (URN)
Available from: 2017-03-24 Created: 2017-03-24 Last updated: 2017-04-03

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