TXT-tool 3.886-1.1: Debris2D Tutorial
The introduction of the Debris-2D program for two-dimensional debris flow simulation is presented. Debris-2D is one of the most used models in Taiwan, and it has been verified as a practical tool for debris flow assessment. The introduction focuses on the theoretical background, computational algorithm, program input and output data, and applications review. In the fundamental theory, debris flow is treated as a non-Newtonian fluid with a yield stress. For simulations, the input data includes initial mass distributions of debris flow and yield stress. Debris-2D can simulate and output flow depth, flow velocity, impact force, and affected area of time variation with high spatial and arbitrary temporal resolution. Some simulation results of real cases in Taiwan are described. These results show that Debris-2D is a practical and effective program for debris flow assessment.
KeywordsDebris-2D Debris flow Numerical simulation Assessment
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