Please use this identifier to cite or link to this item:
https://doi.org/10.1063/1.4996943
DC Field | Value | |
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dc.title | An investigation of the effect of aspect and compression ratios on sediment dispersion using discrete element modelling | |
dc.contributor.author | Wang D. | |
dc.contributor.author | Tan D.S. | |
dc.date.accessioned | 2020-09-08T03:24:51Z | |
dc.date.available | 2020-09-08T03:24:51Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Wang D., Tan D.S. (2017). An investigation of the effect of aspect and compression ratios on sediment dispersion using discrete element modelling. AIP Advances 7 (12) : 125227. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4996943 | |
dc.identifier.issn | 2158-3226 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/174608 | |
dc.description.abstract | We use discrete element modelling to simulate a system of sand being released underwater, similar to the process of releasing sediment tailings back into the sea in nodule harvesting, in 2D. The force model includes concentration-dependent drag, buoyancy, 'added mass' and Stokeslet disturbance. For a fixed number of uniform-sized particles, we vary the aspect ratio and the compression ratio of the rectangular mass of granular media pre-release. We observed that the spreading leads to a nonlinear increase with aspect ratio. On the other hand, when the compression ratio is increased, the total spreading increases; however the spread of the bulk of the sand decreases at small aspect ratios and increases at large aspect ratios. We proposed a simple theoretical model for the horizontal spreading which depends on both the aspect and compression ratios. © 2017 Author(s). | |
dc.source | Unpaywall 20200831 | |
dc.subject | Compression ratio (machinery) | |
dc.subject | Particles (particulate matter) | |
dc.subject | Concentration-dependent | |
dc.subject | Discrete Element Modelling | |
dc.subject | Fixed numbers | |
dc.subject | Granular media | |
dc.subject | Large aspect ratio | |
dc.subject | Sediment dispersions | |
dc.subject | Small aspect ratio | |
dc.subject | Theoretical modeling | |
dc.subject | Aspect ratio | |
dc.type | Article | |
dc.contributor.department | MECHANICAL ENGINEERING | |
dc.description.doi | 10.1063/1.4996943 | |
dc.description.sourcetitle | AIP Advances | |
dc.description.volume | 7 | |
dc.description.issue | 12 | |
dc.description.page | 125227 | |
dc.published.state | Published | |
Appears in Collections: | Elements Staff Publications |
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10_1063_1_4996943.pdf | 9.69 MB | Adobe PDF | OPEN | Published | View/Download |
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