محمد واقفی

In this paper, numerical method using SSIIM software examines the changes of three-dimensional velocity contours around the series of three-dimensional bases located in the 180 degree arc. In this regard, the parameter of the relative curvature radius in the position of the bases was examined in line with the flow path at the top of the arc. The results show that the maximum amount of radial and tangential velocity near the bed occurs in the relative curvature radii 2 and 4, respectively. Also, changes in the maximum negative radius velocity with distance from the bed did not have a definite trend, while the maximum positive radial velocity value increases sharply as the bed level increases.