抄録
Numerical simulation of flow over stepped channel is performed here in. All the previous studies on the flow over stepped channels have been done in the experimental way. It is because that in the Eulerian method, which is popular as the method for analyzing the free surface flow, it is too difficult to treat complicated boundary condition of this phenomenon. On the other hand, the particle method shows good performance to simulate the fragmentation and coalescence of liquid. The previous numerical simulations by particle method in hydraulic engineering were executed in 2-D field because it was impossible to track the sufficient number of particles required to execute 3-D simulation, due to a limitation of computational memory. But, in these days, the hardwear is rapidly developping and we can control sufficient number of particles to execute 3-D simulation under the rather small computational domain. In this study, 3-D simulation model of particle method is applied to the flow over stepped channels.
