Numerical study has been carried out to understand dynamics of flow past a circular disk placed in narrow V shaped channel for different Reynolds number. The Reynolds number based on the disk diameter is fixed for the study. This basic study will help to understand the frequency of vibration due to formation of vortex shedding and its coincident with natural frequency of the object. The velocity and pressure distribution in the flow domain are obtained from the Navier-Stokes solver, computation of forces and moments on the circular disk. The governing equations are solved by a finite volume method. Pressure-velocity coupling between the incompressible Navier-Stokes and continuity equations is established using the Pressure Implicit with Splitting of Operators algorithm. The first order semi- implicit scheme is chosen for the time integration. The numerical data are compared with inhouse experimentally obtained flow field at different time intervals.  It is found that the flow fields obtained numerically are well in line with the experimental data. It is established from the observation and calculated values that the shedding frequency increases with the flow velocity around the body. The findings of this study will help to calculate the periodic force which becomes spatially correlated to the mode shape and large amplitudes and leads to fatigue cracks and fretting wear damage to the engineering equipment such heat exchangers etc.