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dc.contributor.authorKellenberger, Mark
dc.contributor.otherQueen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))en
dc.date2012-09-25 14:15:37.615en
dc.date.accessioned2012-09-25T20:42:23Z
dc.date.available2012-09-25T20:42:23Z
dc.date.issued2012-09-25
dc.identifier.urihttp://hdl.handle.net/1974/7504
dc.descriptionThesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2012-09-25 14:15:37.615en
dc.description.abstractHigh-speed particle dispersion research is motivated by the energy release enhancement of explosives containing solid particles. In the initial explosive dispersal, a dense gas-solid flow can exist where the physics of phase interactions are not well understood. A dense particle flow is generated by the interaction of a shock wave with an initially stationary packed granular bed. The initial packed granular bed is produced by compressing loose aluminum oxide powder into a 6.35 mm thick wafer with a particle volume fraction of 0.48. The wafer is positioned inside the shock tube, uniformly filling the entire cross-section. This results in a clean experiment where no flow obstructing support structures are present. Through high-speed shadowgraph imaging and pressure measurements along the length of the channel, detailed information about the particle-shock interaction was obtained. Due to the limited strength of the Mach 2 incident shock wave, no transmitted shock wave is produced. The initial “solid-like” response of the particle wafer acceleration forms a series of compression waves that coalesce to form a shock wave. Breakup is initiated along the periphery of the wafer as the result of shear that forms due to the fixed boundary condition. Particle break-up starts at local failure sites that result in the formation of particle jets that extend ahead of the accelerating, largely intact, wafer core. In a circular tube the failure sites are uniformly distributed along the wafer circumference. In a square channel, the failure sites, and the subsequent particle jets, initially form at the corners due to the enhanced shear. The wafer breakup subsequently spreads to the edges forming a highly non-uniform particle cloud.en_US
dc.languageenen
dc.language.isoenen_US
dc.relation.ispartofseriesCanadian thesesen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectParticleen_US
dc.subjectShock tubeen_US
dc.subjectDispersionen_US
dc.subjectShock waveen_US
dc.titleDense Particle Cloud Dispersion by a Shock Waveen_US
dc.typeThesisen_US
dc.description.degreeMasteren
dc.contributor.supervisorCiccarelli, Gabrielen
dc.contributor.departmentMechanical and Materials Engineeringen


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