Base pressure becomes a decisive factor in governing the base drag of aerodynamic vehicles. While several experimental and numerical methods have already been used for analysis suddenly expanded flows, their implementation is quite time consuming. Therefore, we must develop progressive approach to determine (?). Furthermore, direct consideration influence flow geometric parameters cannot be stu...

In the present study, base pressure variations induced by presence of a cavity, known to have strong influence behaviour supersonic projectiles, are investigated through numerical solution balance equations for mass, momentum, and energy. An area ratio four is considered simulations carried out at Mach M = 1.2, 1.4, 1.6, 1.8 assuming no cavity or locations 0.5D, 1D, 1.5D, 2D. The inlet nozzle a...