METHOD FOR DETERMINING THE POSITIONAL HYDRODYNAMIC CHARACTERISTICS OF A SHIP Russian patent published in 2022 - IPC B63H25/00 B63B1/00 

FIELD: ships control.

SUBSTANCE: invention relates to the control of ships and can be used to predict the trajectories of ships, as well as underwater objects on the surface, performing complex maneuvering. A three-dimensional electronic model of the ship is formed. A computational grid is formed around the three-dimensional model, the distribution of flow velocity and pressure fields is determined. The speed of fluid movement at the inlet with respect to the flow boundary of the computational domain is set equal to the linear velocity of movement, the angular displacements of the three-dimensional model are sequentially set along the drift angle β, stationary hydrodynamic effects are determined at different values ​​of the drift angle β, they are analyzed and positional hydrodynamic characteristics are determined. A coordinate system is introduced with the origin at the point O, the OX axis is directed to the nose of the three-dimensional model, OY - up, OZ - to the starboard side. At the input boundary of the computational domain with respect to the flow, the direction of the flow velocity vector is successively set in accordance with the possible angular displacements of the ship relative to the flow at the drift angles β.

EFFECT: increased safety and control accuracy.

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