NUMERICAL SIMULATION OF GRAVEL BED DEFORMATION ON THE BASIS OF PARTICLE MOTION ANALYSIS

Abstract

Numerical simulation of sediment wave formation was conducted in the present study. Saltation model has been extended in order to analyze the entire motion of particle which starts by being picked-up from a bed and ceases its motion by depositing on it. The procedure in which a mutual collision between moving particles can be explained physically was newly invented here to consider the effect of interaction between them. Based on such models, the multi-particle motion can be analyzed simultaneously. In this paper, the gravel bed deformation which is caused by each particle motions was predicted under the same condition of flume experiment.