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dc.contributor.authorCaplan, Joshua Sam
dc.date.accessioned2018-08-10T15:21:11Z
dc.date.available2018-08-10T15:21:11Z
dc.date.issued2018-10-20
dc.date.submitted2018-03-01
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/278787
dc.description.abstractThe research presented in this thesis concerns the granular collapse problem, where a mass of a granular material is allowed to collapse under its own weight and spread out across a base surface. Whilst this collapse process has been studied in the past, there are a number of potentially important aspects of this problem that have not been fully considered. We start this thesis by repeating previous experiments with the simplest case of a cylindrical mass of a monodisperse material of approximately spherical grains flowing over a horizontal base. By applying new measurement techniques we find differences with previously reported results. We then extend the problem to the bidisperse case by using layers of two types of particles that differ only in their size. We find that, contrary to expectation, there is little segregation of the two species during the collapse. We then return to the monodisperse problem and consider the effects of increasing the initial column aspect ratio beyond the values previously considered. We first use an asymptotic analysis of the possible shapes of the final deposit to find restrictions on the large aspect ratio behaviour of the deposit's maximum height and radius. Finally, we perform monodisperse collapses of a range of materials with aspect ratios of up to 80. We find that the dynamics of the flow and the shape of the final deposit are significantly different in this regime.
dc.description.sponsorshipEPSRC PhD Studentship
dc.language.isoen
dc.rightsAll rights reserved
dc.rightsAll Rights Reserveden
dc.rights.urihttps://www.rioxx.net/licenses/all-rights-reserved/en
dc.subjectgranular
dc.subjectgranular collapse
dc.subjectgranular flow
dc.subjectgranular media
dc.subjectcollapse
dc.subjectgranular segregation
dc.subjectmonodisperse
dc.subjectbidisperse
dc.titleGranular Collapses
dc.typeThesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMaster of Science (MSc)
dc.publisher.institutionUniversity of Cambridge
dc.publisher.departmentDAMTP
dc.date.updated2018-08-10T12:51:54Z
dc.identifier.doi10.17863/CAM.26154
dc.contributor.orcidCaplan, Joshua Sam [0000-0002-2898-4799]
dc.publisher.collegeTrinity
dc.type.qualificationtitleMaster of Science
cam.supervisorDalziel, Stuart
cam.supervisorVriend, Nathalie
cam.thesis.fundingtrue
rioxxterms.freetoread.startdate2018-08-10


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