抄録
Flow visualization in a target for the accelerator driven system was analyzed numerically to obtain the fundamental flow characteristics under annular channel geometry with a reverse section. The analytical geometry simply simulates the experimental condition. The three-dimensional numerical computations were carried out using the SCRYU/Tetra code and the nonlinear low Reynolds turbulence model. Two kinds of channel end geometries were provided as a numerical parameter. From the present numerical study, the following conclusions were derived: an effect of the channel end geometry to the fluid flow behavior was clarified; and, detailed flow configurations inside the annular channel with a reverse section were predicted quantitatively.
