ENGINEERING AND MODELING OF OPTIMAL MANEUVERING OF VESSELS WITH VORTEX PROPULSION UNITS

Abstract

[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT The paper proposes a schematic diagram of an additional device for vortex propulsion units of vessels and algorithms for computer simulation of their use for various maneuvering options. The paper describes the advantages of vessels with propulsion units in the form of generators of vortex pairs, including toroidal vortices (thermals), the efficiency of propulsion units of which increases with the increase in their dimensions. A comprehensive analysis of the specifics of maneuvering of such vessels is presented. Practical inapplicability of traditional vessels’ devices for changing the course of the vessel and unacceptable duration of reaching steady-state modes and the stopping process when using only regular vortex generators are shown. A sequence of actions with vortex generators is described for the main types of maneuvers. In the paper, a schematic diagram of an additional device (with an estimation of its physical dimensions) is proposed to the vortex propulsion units of vessels, which ensures unwinding or braking of the «attached» mass for a predetermined time with minimal loss of power. Algorithms for computer simulation of the change in the nature of the flow in the closed flow region are developed using the proposed additional acceleration device. It is shown that the algorithms implemented in the work can be used in the control of a real vessel. Keywords: water transport, water vessels and aircraft with vortex propulsion units, surface and underwater (toroidal) vessels, flow in the vicinity of the vortex pair, drag, steady and transient modes, attached mass of water, blade, rotor.