抄録
Gas-solid-two-phase flows consisting of fine particles suspended flow is observed in various phenomena, for example powder snow avalanches, in nature. One of these features is that the movement form is affected by mass change due to a sedimentation or entrainment of suspended particulate. In this study, powder snow avalanches are analyzed by numerical simulation model using k-ipusiron turbulence model. Due to introducing the concept of entrainment coefficient, the erosion and deposition of snow particles are taken into account in this model. The travel distance and the stopping place of powder snow avalanche occurring in Hidarimatatani are compared with numerical results.
