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DC Field | Value | Language |
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dc.contributor.author | Gong, S | - |
dc.contributor.author | Zhao, T | - |
dc.contributor.author | Zhao, J | - |
dc.contributor.author | Dai, F | - |
dc.contributor.author | Zhou, GGD | - |
dc.date.accessioned | 2022-01-09T09:00:19Z | - |
dc.date.available | 2022-01-09T09:00:19Z | - |
dc.date.issued | 2020-09-23 | - |
dc.identifier.citation | Gong, S., Zhao, T., Zhao, J., Dai, F. and Zhou, G.G.D. (2021) 'Discrete element analysis of dry granular flow impact on slit dams. Landslides, 18 (3), pp. 1143 - 1152. doi: 10.1007/s10346-020-01531-2. | en_US |
dc.identifier.issn | 1612-510X | - |
dc.identifier.uri | https://bura.brunel.ac.uk/handle/2438/23915 | - |
dc.description | Code availability: The code used in this study is the open-source DEM code ESyS-Particle, available at: https://launchpad.net/esys-particle | en_US |
dc.description.abstract | Copyright © 2020 The Author(s). Slit dam is an open-check barrier structure widely used in mountainous regions to resist the destructive impacts of granular flows. To examine the dynamics of granular flow impact on slit dams, a numerical study by discrete element method (DEM) is presented in this article. The study considers dry granular materials flowing down a flume channel and interacts with slit dams installed at the lower section of the flume. The particle shape is explicitly considered by particle clumps of various aspect ratios. The slit dams are modeled as rigid and smooth rectangular prisms uniformly spaced at in the flume. Four key stages of granular flow impact on the slit dams have been identified, namely, the frontal impact, run up, pile up, and static deposition stages. In the impact process, the kinetic energy of the granular flow is dissipated primarily by interparticle friction and damping. The trapping efficiency of the slit dams decreases exponentially with the relative post spacing, while it increases with the particle clump aspect ratio. The numerical results can provide new insights into the optimization of relative post spacing for slit dam design. | en_US |
dc.description.sponsorship | National Key R&D Program of China (Grant No.2018YFC1505004); International Science & Technology Cooperation Program of China (No. 2018YFE0100100); open funding of the Key Laboratory of Mountain Hazards and Earth Surface Process (Chinese Academy of Sciences & Ministry of Water Conservancy). | en_US |
dc.format.extent | 1143 - 1152 | - |
dc.format.medium | Print-Electronic | - |
dc.language | English | - |
dc.language.iso | en_US | en_US |
dc.publisher | Springer Nature | en_US |
dc.rights | Copyright © 2020 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | - |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | - |
dc.subject | dry granular flow | en_US |
dc.subject | slit dam | en_US |
dc.subject | discrete element method | en_US |
dc.subject | particle clump | en_US |
dc.subject | trapping efficiency | en_US |
dc.title | Discrete element analysis of dry granular flow impact on slit dams | en_US |
dc.type | Article | en_US |
dc.identifier.doi | https://doi.org/10.1007/s10346-020-01531-2 | - |
dc.relation.isPartOf | Landslides | - |
pubs.issue | 3 | - |
pubs.publication-status | Published | - |
pubs.volume | 18 | - |
dc.identifier.eissn | 1612-5118 | - |
Appears in Collections: | Dept of Civil and Environmental Engineering Research Papers |
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