Finite difference lattice Boltzmann method for modeling dam break debris flows

A finite difference lattice Boltzmann method (FDLBM) for the simulation of mud and debris flows one-dimensional cases has been introduced. The proposed FDLBM recovers generalized equations flows, that is, an unsteady Saint-Venant equation, including effects non-Newtonian behavior mixture water soil, contraction–expansion losses (or large eddy loss), wind force, various geometries, lateral inflow or outflow. can be implemented viscoplastic constitutive models studied flows. is validated against previous studies several benchmark cases, steady-state problems, hydraulic jump tests, dam breaks with dry wet beds, slope break floods. Finally, Anhui failure flood was investigated by this approach, results demonstrated a good agreement observed computational field tests.