Movement of an submerged body in conditions of shallow water depth

Abstract

Forces and moments acting on an AUV during its movement play a decisive role in its manoeuvrability and operational parameters. When choosing the shape of a vehicle, it is necessary to provide for obtaining acceptable hydrodynamic qualities that ensure the vital activity of a crew and the placement of equipment, which directly affects the dimensions and external outlines of an AUV. The purpose of the study was to determine the performance of the numerical model in the ANSYS software by comparing the results of the hydrodynamic characteristics of the object with experimental data and data from other studies. Hydrodynamic forces acted on the immersed body from the side of the liquid at a small immersion depth. The dependences demonstrated both qualitative and quantitative agreement between the experimental and numerical results. In general, we concluded that the proposed methodology and method of conducting model experiments and the numerical algorithm developed by us, accurately describes the process of motion of a submerged body in a near-surface water environment.