The problem of erosion control and sedimentation in rivers has long been considered by humans. Every year a large number of bridges and flood in the river, at a time when they are most needed, are destroyed. One of the most effective agents of this destruction, scour around the base of the bridge, which creates a lot of human and financial losses. vanes submerged and non-submerged, structures that are at the bottom of the river with an angle to the main flow and in order to prevent the erosion of as rivers and screws and the base structure and morphology of the water and the river bed are correct. The secondary vortex structures cause's changes in the flow pattern of the river bottom sediment and erosion are the result of the transition. System, number, space, geometry and angle of the screen can be effective in the sediment of the front legs. Understanding the flow field plates can help engineers to better use them in rivers. So, in this thesis examined the effect of submerged vanes on the cylinder of the river has been using the software SSIIM and in this regard the placement of three vanes is studied in this research.