Numerical Modeling of Rising Maneuvers Using Compressed Air Applying in a Typical Submarine

One of the important compartments in a submarine due to change of the depth is main ballast tanks (MBT). Submarines are usually designed in order to blow compressed air into main ballast tanks. In order to provide an exact model, it is required to determine the relation between weight and buoyancy with blowing air process. In the oceans with non-deterministic conditions, it is required to simulate and test these conditions in a virtual space by the aid of an exact and complete dynamic model. In this paper, a numerical modeling for air blowing into MBTs for a typical submarine is considered and verified with experimental results. The results were shown direct effects of tanks situation, submarine angle about pitch and yaw on air blowing into MBTs. Meanwhile, in case of rising, the submarine made rolling instability being smaller by increasing velocity.