【摘要】 泥石流常常导致严重的灾难。黏性泥石流的运动符合宾汉流体运动规律,认为黏性泥石流遵循可压缩流Navier-Stokes方程,建立了基于无网格粒子算法的SPH数值模型。对SPH法的基本原理、核函数及控制方程离散格式、边界处理及数值解法等进行了介绍。在此基础上分析研究了黏性泥石流堆积运动过程,并与试验结果及其他理论方法得到的结果进行了比较,表明该方法能够模拟黏性泥石流的堆积运动过程。更多还原

【Abstract】 Debris flow often causes serious disasters.The viscous debris flow motion agrees with the Bingham movement law,which assumes that the viscous debris flow could be described by compressible Navier-Stokes equations.This study established a meshfree particle SPH(smoothed particle hydrodynamics) model,and introduced the basic principle,kernel function,discretization scheme and boundary treatments of the SPH.Based on the model,the movement process of the accumulation of viscous debris flows is analyzed.The analysis results are compared with results from experiments and other methods.The model is shown capable of simulating the whole process of accumulation of viscous debris flows.更多还原