NUMERICAL SIMULATION OF SURFACE EROSION AND SEDIMENT YIELD FROM BARE HILLSIDE

Abstract

Erosion process of bare hillside was investigated experimentally and numerically in the present study. Experiments were conducted on the model hillside with the artificial rainfall in the experimental flume. The numerical simulation model has been developed to predict the erosion process and to understand it more deeply. The numerical model was applied to the phenomenon which occurred on the slope in the experimental flume. Based on the comparison between the experimental results and the numerical ones, the validity of the present numerical model was verified. The process of channel network evolution and the head migration of the gully were investigated on the basis of this numerical analysis. Temporal variation of sediment yield from the hillside was also studied.