  One of the most critical problems in the river engineering field is scouring,
sedimentation and morphology of a river bed. In this paper, a finite volume
method FORTRAN code is provided and used. The code is able to model the
sedimentation. The flow and sediment were modeled at the interception of the
two channels. It is applied an experimental model to evaluate the results.
Regarding the numerical model, the effects of geometry parameters such as
proportion of secondary channel to main channel width and intersection angle
and also hydraulic conditionals like secondary to main channel discharge ratio
and inlet flow Froude number were studied on bed topographical and flow
pattern. The numerical results show that the maximum height of bed increased to
32 percent as the discharge ratio reaches to 51 percent, on average. It is
observed that the maximum height of sedimentation decreases by declining in
main channel to secondary channel Froude number ratio. On the assessment of the
channel width, velocity and final bed height variations have changed by given
trend, in all the ratios. Also, increasing in the intersection angle
accompanied by decreasing in flow velocity variations along the channel. The
pattern of velocity and topographical bed variations are also constant in any
studied angles.
