Body shape of high-speed underwater vehicles has a great effect on the
Supercavitation behaviour. The transient flow around either partially cavitating or
supercavitating body affects the trajectory of high-speed underwater vehicles.
Commercial code (ESI-CFD ACE+, V 2010) was used to simulate the
supercavitation around two different shapes of a projectile with their noses of
hemispherical shape and telescopic shape. Also, conical and blunt projectile shapes
were considered. Also, a comparison between two different designs of grid was
performed numerically. Grid designs were structured and unstructured grids.
Navier-Stokes equations were used as governing equations for simulating
supercavitation. Cavity shape was determined over projectile body and around
wake. Also, two-dimensional flow field around the cavitating body was determined.
Projectile body has a diameter about 0.4 times its length (0.4L). In the case of the
Blunt end there is a strong wake effect. The ESI-CFD code (2010) is valid for
observing the supercavitation phenomena. Unstructured grid is more accurate than
structured one in simulating supercavitation.