Hydrodynamic Force Modeling of an Irregular Body

As an important part of the aircraft, the protective shell can protect the aircraft and other payloads. But it will become an irregular body falling into water when it is abandoned. The hydrodynamic force of the irregular body is complex and hard to express. In this paper, a semi-cylindrical shell is taken as an irregular body example to study the hydrodynamic characteristics and its expression. By using the computational fluid dynamics (CFD) method, the hydrodynamic force of the irregular body is obtained, and its characteristics is analyzed in detail. It can provide a basis for further research of the irregular body.