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タイトル: | Numerical Simulation Study of Debris Particles Movement Characteristics by Smoothed Particle Hydrodynamics |
著者: | Ueta, Shoji Hosono, Natsuki Kuroki, Ryusuke Yamashiki, Yosuke |
著者名の別形: | 上田, 翔士 山敷, 庸亮 |
キーワード: | debris flow numerical simulations SPH |
発行日: | Feb-2022 |
出版者: | Fuji Technology Press Ltd. |
誌名: | Journal of Disaster Research |
巻: | 17 |
号: | 2 |
開始ページ: | 237 |
終了ページ: | 245 |
抄録: | Debris flow is an important natural hazard in mountain zone because it can threaten human lives with very little warning. Since laboratory experiments on debris flows at real scale are difficult to perform, numerical simulations are important in evaluating the impact of such flows. Among several candidate models, the smoothed particle hydrodynamics (SPH) is a particular attractive numerical method for this purpose. SPH is a particle-based numerical hydrodynamic method originally developed in the astrophysical field before extension to elastic bodies. Several works have already tested the applicability of SPH to debris flow, despite there are only few detailed validations. In this report, thus, we aimed to check the applicability of SPH to debris flows. Since the accurate treatment of the elastic bodies tends to be computationally expensive, we have developed a massively parallel SPH code. A comparison between laboratory experiments and numerical simulations using SPH showed qualitatively similar features, though there are differences in quantitive comparisons. |
著作権等: | © Fuji Technology Press Ltd. Creative Commons CC BY-ND: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NoDerivatives 4.0 International License. |
URI: | http://hdl.handle.net/2433/285557 |
DOI(出版社版): | 10.20965/jdr.2022.p0237 |
出現コレクション: | 学術雑誌掲載論文等 |
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