RESEARCH OF THE MODEL AND CALCULATION METHODS OF VESSEL HYDRODYNAMICS ON WAVES

Abstract

The work deals with a scientific and practical task, the solution of which is of significant practical interest. The existing methods of justifying the sway parameters require the involvement of the results of expensive model experiments, in particular, to take into account viscous damping. The capabilities of existing computer equipment, computer technologies and appropriate software allow, at the initial stages of designing marine technical objects, to fairly accurately predict the parameters of their wobble due to turbulence, taking into account the forces of viscous nature. This makes it possible to significantly reduce the cost of design work in terms of determining the hydrodynamic characteristics of marine objects. On the basis of the conducted research, the following results were obtained: an analysis of existing approaches to solving the problems of hydrodynamics and dynamics (rocking) of sea vessels and other technical structures on waves was carried out, a mathematical model of the complex problem of hydrodynamics and dynamics of a marine object for a viscous liquid was developed, a methodology for conducting a numerical experiment for calculating rocking motion on a regular wave was developed, software was developed for preparing output data and processing the results of a numerical experiment, practical recommendations were developed for numerically modeling the rocking of a marine object on regular waves and determining the dynamic parameters of the rocking motion, a numerical simulation of the dynamics of the movement of a sea vessel was carried out on excitement