This paper presents ? numerical solution of a non-similar two-dimensional boundary-layer flow
over a cylinder. The assumptions and related two-dimensional flow equations are presented. The
fourth-order Runge-Kutta method with the backward differentiation formula (BDF) method to
separation point is implemented in the numerical solution using MATLAB software. Numerical
solution results are compared with well-known analytic solutions. Shear stress diagram, friction
ratio based on θ and x, and output results are illustrated. The results of numerical solution
demonstrate good consistency with analytic solutions.