<b>Fraction Step Method for Solving Incompressible Navier Stokes Equation</b> This paper contains the method used to solve Incompressible Navier Stokes INS equation. This study is conducted to see how the methods used in this paper gives a solution over a particular domain. Fraction Step Method is used for solving INS equation. Non dimensional equation is taken for formulation. It is solved in two parts. With first part, intermediate velocity is calculated. Then next part is used to calculate pressure. Once pressure is obtained, then velocity is corrected for next time step. This is called Pressure correction method. This process is continued until steady state solution is obtained. After that, vorticity is calculated, and plotted. These plots are analyzed and compared with the experimental solution. Further a conclusion is made regarding whole paper. 193-196 Issue-5 Volume-4 Devansh Purohit