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Title: Discrete element modelling of particulate systems for industrial applications
Author: Mak, K. W.
Awarding Body: University of Wales Swansea
Current Institution: Swansea University
Date of Award: 2004
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An effective methodology for modelling particulate systems is presented within an explicit finite/discrete element framework. Issues related to contact resolution of the contact constitutive laws and kinematics relationship of particle of various geometry complexities (circular disk, ellipse particle, sphere, clumped or bonded disk and sphere particle) are presented and investigated. Particular emphasis is given to the specification of contact parameters of particle such as normal and tangential damping, cohesion and adhesion force, rotational damping and rolling resistance. Preliminary numerical test for simple particulate problem are carried out to support the validity of the contact algorithms implemented. The develop discrete contact algorithms are implemented to the numerical tool in order to simulate the particulate systems problem in industrial applications. Since there is a lack of theoretical and experimental solutions for some of the challenging problems of particulate system in industrial applications, the numerical contact scheme provides an alternative solution. The numerical simulation based on the developed contact algorithms is demonstrated on three main different industrial applications. The bucket filling process in mining operation, silo filling, hopper discharging, tumbling mills and screw feeder discharging in mineral processing and vibrating beds in chemical engineering. The particulate system for these industrial applications shows a good agreement in comparison with the qualitative and some quantitative results from the experiment.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available