Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Granular column"”.
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Dynamics of 1d granular column
… study of the dynamics of a one- dimensional column of inelastic spheres that it subjected to taps by prescribing a half sine wave pulse to supporting floor. Contact interactions obey the Walton-Braun soft-sphere model in which the loading (unloading) path is governing by linear springs of …
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DEM simulated floor pressure induced by a granular column
… floor pressure in a cylindrical container of granular material asymptotes exponentially to a value less than the weight of the material i.e., the pressure becomes independent of the fill height of the column. This phenomenon is investigated using discrete element simulations of inelastic, …
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DEM simulated radial and axial pressure in a cylindrical granular column
The study of packed beds of granular spheres and their applications are of great interest to industries, and one of the most important subjects that has been studied is cylindrical beds. In 1895, H. A. Janssen discovered that in a vertical cylinder the pressure measured at the bottom does not …
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Ground improvement using PET bottle waste as a potential reinforcement material for granular columns: an experimental approach
… weak engineering properties of certain soils, granular columns are often preferred due to their cost effectiveness and environment friendliness. Despite their high usage in other countries, this technology remains rather unpopular in South Africa. Therefore, this study was undertaken to extend …
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Multi-scale multiphase modelling of granular flows
… hazards usually involve multiphase flow of dense granular solids and water. Understanding the mechanics of granular flow is of particular importance in predicting the run-out behaviour of debris flows. The dynamics of a homogeneous granular flow involve three distinct scales: the microscopic …
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A 4D photogrammetric system for studying flow-like landslides
… landslide models. The hardware captures granular flows as time-series three-dimensional (4D) point clouds, producing high-quality digital datasets of laboratory landslide experiments. The software incorporates a robust tracking algorithm, enabling the calculation of flow velocity vectors …
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Simulation of free-surface flows and development of an improved particle method
… apply WC-MPS to simulate fishway flows and dry granular flows, numerically investigating the flows structures and velocity distributions. However, this method suffers from pressure noise and unphysical pressure fluctuations in modeling flows. Therefore, the other aspect of this study is to …