Numerical simulation on supercavitation and yawing of a supersonic projectile traveling in water

Abstract. A supersonic projectile traveling in the water causes a supercavitation
phenomenon around the projectile. In order to clarify the effect of the initial
conditions of the projectile and the water on the behavior of the projectile, parametric
surveyed numerical simulations are performed by using a two-dimensional
hydrocode. It can be thought that the diaphragm distortion confining the water
affects significantly the behavior of the traveling underwater projectile. In
fact, the effects of the penetrating angle and the velocity of the projectile on its
postures and trajectory are significant.