PREDICTION OF SHOCK WAVE AND EXTERNAL FLOW FIELD PARAMETERS IN A MODERATE SUPERSONIC FLOW OVER A 3-D ARC CIRCULAR BUMP

Abstract

This study is used to compute the primitive variables of moderate supersonic flow based on finite difference computational fluid dynamic methods. The problem considered deals with a three-dimensional external, inviscid ,compressible supersonic flow over a three-dimensional arc circular bump. In this work, Euler equation was solved using time-marching MacCormack’s explicit technique. The flow conditions are taken at sea level and Mach number at 1.97. To deal with complex shape of arc circular bump the so-called “body fitted coordinate system” were considered and the algebraic methods were used to generate grids over an arc circular bump. The results showed a good agreement with other published results.