Numerical Solution of 2D Bend-River Flow with Groins Using a Local Coordinate System

This paper is concerned with a new numerical method of two-dimensional flow. The 2D bend-river flow with groins was computed by the proposed model. The governing system of differential equations is transformed into an equivalent system applied over a square-grid network in order to overcome the difficulties and inaccuracies associated with the determination of characteristics near the flow boundaries. The MacCormack two-step explicit scheme with second-order accuracy is used for the solution of the transformed system of equations. The computed flow field was obtained. Comparisons between the computed and experimental data show a satisfactory agreement.