EXAMINATION ON FLUID-SOLID INTERACTION MODEL IN PARTICLE-BASED SIMULATION OF WAVE GENERATED BY GRANULAR COLLAPSE
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- IKARI Hiroyuki
- 京都大学 工学研究科社会基盤工学専攻
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- GOTOH Hitoshi
- 京都大学 工学研究科社会基盤工学専攻
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- HIGUCHI Yuichi
- 京都大学大学院 工学研究科社会基盤工学専攻
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- OSADA Naoki
- 京都大学大学院 工学研究科社会基盤工学専攻
Bibliographic Information
- Other Title
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- 多数粒子群の突入による水面波発生解析における固液間相互作用モデルの検討
- タスウ リュウシグン ノ トツニュウ ニ ヨル スイメンハ ハッセイ カイセキ ニ オケル コエキ カン ソウゴ サヨウ モデル ノ ケントウ
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Description
<p> In a 2D simulation of a wave generated by a granular collapse, it is unavoidable to calculate a fluid-solid interaction using a drag-force model because it is impossible to solve a pore-water flow faithfully. Unless the behavior of fluid pushed out by a granular solid can be simulated presicely, however, the reproducibility of a water surface profile can be deteriorated. In this study, a particle-based simulation using MPS method is conducted; however, not only a drag-force model but also the apparent volume change is implemented as a fluid-solid interaction to the proposed model. In a simulation of a wave generated by a granular collapse, we examine the effect of the apparent volume change and the influence of two different drag-force models. It is shown that the apparent volume change is indispensable to obtain an accurate water surface profile. The difference of the calculated results by two drag-force models is slight; however, the model considering only a nonlinear term tends to evaluate a drag force more strongly.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76 (2), I_25-I_30, 2020
Japan Society of Civil Engineers