Abstract
This study presents some investigations on full-scale avalanche-experiments at Niseko and its computational simulation using a refined MPS method. The experiment successfully reproduced a typical flow-type snow-avalance with a real scale. The data of the front-speed, avalanche width throughout the start to the end of avalanche motion are observed and recorded. In addition, numerical calculations were conducted using refined MPS method to reproduce the experimental results. In order to apply this method to snow avalanches, we modified the original erosion-deposition model to more reasonable way and introduced a constitutive equation of Bingham fluid to the bed surface. The model performances are evaluated through the comparison with the real-scale experimental results. It is shown that the present refined model is a powerful tool to predict real scale snow avalanches.
