摘要
以结构二相流模型为基础,建立了二维粘性泥石流运动堆积的数学模型。模型采用三角网格的有限差分方法,具有计算效率高、边界处理精度高的优点。针对粘性泥石流运动速度快、龙头部位前缘坡度陡的特性,简述了计算中的动边界处理及泥石流停积条件的处理方法。以云南东川蒋家沟泥石流堆积试验为例,模拟了不同来流补给量下粘性泥石流的运动堆积过程。
This paper provides a new method for the computation of viscous debris flows. Based on the concept of two-phase flows, a 2-D numerical model for the debris flow is established by finite difference method with triangular mesh. The model was applied to an experiment of debris flow. The results show that the model has a good ability to simulate the whole processes of accumulation of viscous debris flows.
出处
《泥沙研究》
CSCD
北大核心
2006年第6期60-64,共5页
Journal of Sediment Research
关键词
粘性泥石流
运动堆积
二维数值模拟
三角网格
viscous debris flow
debris accumulation
2-D numerical simulation
triangular mesh
