Numerical simulation of debris-flow behavior based on the SPH method incorporating the Herschel-Bulkley-Papanastasiou rheology model

Zheng Han, Bin Su, Yange Li, Wei Wang, Weidong Wang, Jianling Huang, Guangqi Chen

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

A rational rheology model is critical for the numerical simulation of debris-flow behavior. The Bingham model commonly used in many current studies has failed to simulate the shear thickening and thinning phenomenon in experiments. We report an alternative solution by incorporating the Herschel-Bulkley-Papanastasiou (HBP) model with the smoothed particle hydrodynamic (SPH) method. The SPH simulation is based on the open-source DualSPHysics scheme, upon which we built a development by the Bingham-based rheology model in our previous study. In this paper, a straightforward improvement is made such that the HBP model is incorporated to describe the constitutive law between particles, extending the compatibility of the simulation to dilatant and pseudoplastic fluids. To illustrate the performance of the HBP-based SPH method, first, a sensitivity analysis was performed to investigate the influence of important rheological coefficients. The proposed method was then verified by a dam-break experiment of water-clay mixtures and the case study of the 2010 Yohutagawa debris-flow event in Japan. The results indicate a good accordance between simulation and observation. A discussion regarding the potential and limitations of the current method concludes the paper.

元の言語英語
ページ(範囲)26-36
ページ数11
ジャーナルEngineering Geology
255
DOI
出版物ステータス出版済み - 5 18 2019

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rheology
Rheology
Debris
debris flow
Hydrodynamics
hydrodynamics
Computer simulation
simulation
Dams
Sensitivity analysis
thinning
sensitivity analysis
Clay
experiment
dam
Experiments
particle
method
clay
Fluids

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geology

これを引用

Numerical simulation of debris-flow behavior based on the SPH method incorporating the Herschel-Bulkley-Papanastasiou rheology model. / Han, Zheng; Su, Bin; Li, Yange; Wang, Wei; Wang, Weidong; Huang, Jianling; Chen, Guangqi.

:: Engineering Geology, 巻 255, 18.05.2019, p. 26-36.

研究成果: ジャーナルへの寄稿記事

Han, Zheng ; Su, Bin ; Li, Yange ; Wang, Wei ; Wang, Weidong ; Huang, Jianling ; Chen, Guangqi. / Numerical simulation of debris-flow behavior based on the SPH method incorporating the Herschel-Bulkley-Papanastasiou rheology model. :: Engineering Geology. 2019 ; 巻 255. pp. 26-36.
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