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Water–sediment flow modeling for field case studies in Southwest China

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  • Ridong Chen
  • Songdong Shao
  • Xingnian Liu

Abstract

This paper presents a highly robust numerical model to simulate water–sediment mixture flows in practical field studies. The model is composed of an integrated algorithm combining the finite element characteristic splitting method and finite volume Godunov scheme. The former maintains the generality and stability of the numerical algorithm, while the latter ensures the conservation and accuracy of the model. The proposed model is first tested by three benchmark flow problems including flood flow in a pool, dam break over a mobile bed, and morphological process of a dam removal. Then, the model is applied to two practical field case studies to demonstrate its potential engineering values. The first case study is related to the damage of the Polo Hydropower Plant by a sediment flooding event. The second one is the investigation of a well-known 2013 dam-break flooding that happened in the Tangjiashan Mountain. It is shown that the simulated water and sediment flows are in good agreement with the documented laboratory and field data, and the numerical model is capable of providing useful information on the flow predictions, thus making further engineering measures to mitigate these disasters. Copyright Springer Science+Business Media Dordrecht 2015

Suggested Citation

  • Ridong Chen & Songdong Shao & Xingnian Liu, 2015. "Water–sediment flow modeling for field case studies in Southwest China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 78(2), pages 1197-1224, September.
    • Handle: RePEc:spr:nathaz:v:78:y:2015:i:2:p:1197-1224
    DOI: 10.1007/s11069-015-1765-z
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    References listed on IDEAS

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    1. Zhixian Cao & Zhiyuan Yue & Gareth Pender, 2011. "Landslide dam failure and flood hydraulics. Part II: coupled mathematical modelling," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 59(2), pages 1021-1045, November.
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    Cited by:

    1. Xiaogang Zheng & Ehsan Kazemi & Eslam Gabreil & Xingnian Liu & Ridong Chen, 2020. "Sustainability of the Dujiangyan Irrigation System for over 2000 Years–A Numerical Investigation of the Water and Sediment Dynamic Diversions," Sustainability, MDPI, vol. 12(6), pages 1-15, March.

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