A 2D finite-element debris-flow model based on the Cross rheology formulation
We propose a 2D debris flow model based on a non-Newtonian Cross rheological formulation, where the fluid viscosity changes continuously through the range of shear rates. The model uses an explicit finite element formulation based on triangular grids that can flexibly adapt to irregular boundaries as those common in urban and mountainous areas. Preliminary tests show that the model is able to reproduce experimental data and the 1D analytical solution proposed by Huang &Garcia (1997, 1998), except in the vicinity of the advancing fluid front, where numerical diffusion smears out results. Our simulations results suggest that the Cross rheological model is more stable than other discontinuous constitutive relations.
debris flow Cross rheological formulation 2D model finite-element method
C. Martinez F. Miralles-Wilhem R. Garcia-Martinez
Department of Civil and Environmental Engineering, Florida International University, Miami, FL, USA Applied Research Center, Florida International University, Miami, FL, USA
国际会议
成都
英文
189-196
2007-05-17（万方平台首次上网日期，不代表论文的发表时间）