SPH model for fluid–structure interaction and its application to debris flow impact estimation

被引：13
作者：
Zili Dai
Yu Huang
Hualin Cheng
Qiang Xu
机构：
[1] Tongji University,Department of Geotechnical Engineering, College of Civil Engineering
[2] Tongji University,Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education
[3] China Three Gorges University,Hubei Key Laboratory of Disaster Prevention and Reduction
[4] Chengdu University of Technology,State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
来源：
Landslides | 2017年 / 14卷
关键词：
Debris flow; Impact force; Smoothed particle hydrodynamics; Fluid–structure interaction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
On 13 August 2010, significant debris flows were triggered by intense rainfall events in Wenchuan earthquake-affected areas, destroying numerous houses, bridges, and traffic facilities. To investigate the impact force of debris flows, a fluid–structure coupled numerical model based on smoothed particle hydrodynamics is established in this work. The debris flow material is modeled as a viscous fluid, and the check dams are simulated as elastic solid (note that only the maximum impact forces are evaluated in this work). The governing equations of both phases are solved respectively, and their interaction is calculated. We validate the model with the simulation of a sand flow model test and confirm its ability to calculate the impact force. The Wenjia gully and Hongchun gully debris flows are simulated as the application of the coupled smoothed particle hydrodynamic model. The propagation of the debris flows is then predicted, and we obtain the evolution of the impact forces on the check dams.
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页码：917 / 928
页数：11
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