Improving the mathematical model of transient modes of electric ships’ propulsion complexes during maneuvering with lengthening modernization

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Published: Jan 25, 2026
DOI: https://doi.org/10.47049/2226-1893-2025-4-9-35
Keywords:
mathematical modeling, propulsion complex, theory of dynamic similarity, dimensional modernization, transient regimes, ship maneuvering

Main Article Content

О.М. Shumylo
Odesa National Maritime University, Odesa, Ukraine
О.М. Kononova
Odesa National Maritime University, Odesa, Ukraine

Abstract

An improved mathematical model is proposed for evaluating transient regimes of propulsion complexes during maneuvering of electric ships under lengthening modernization. This model forms the basis for developing methods to assess ship motion during various maneuvers and is adapted for application to modern vessels using electric propulsion. Solutions are proposed for determining criteria of dynamic similarity and dimensionless coefficients of the equations for the components of an integrated ship propulsion complex. A method has been developed to evaluate the force and kinematic characteristics of an AZIPOD propulsion–steering complex in an oblique water flow, and an algorithm for such calculations is proposed. The specific influence of the AZIPOD propulsion–steering complex on ensuring ship maneuvering is assessed, considering the vessel as a single system that combines the functions of both propeller and rudder. The differential system of equations of ship hull motion is improved by adding mathematical descriptions of the AZIPOD complex, thrusters, positional and dynamic components of the turning resistance moment, and the additional resistance due to the length of the inserted section used for ship elongation. A comparative analysis is performed between the operating indicators of the propulsion complex obtained with the proposed model and the results of full-scale experiments carried out on real electric ships. The adequacy of the improved mathematical model is verified using the example of a passenger liner performing acceleration–turning maneuvers.

Article Details

How to Cite
ShumyloО., & KononovaО. (2026). Improving the mathematical model of transient modes of electric ships’ propulsion complexes during maneuvering with lengthening modernization. Herald of the Odessa National Maritime University, (78), 9-35. https://doi.org/10.47049/2226-1893-2025-4-9-35
Issue
No 78 (2025): Herald of the Odessa National Maritime University
Section
Theory and design of the ship
Author Biographies

О.М. Shumylo, Odesa National Maritime University, Odesa, Ukraine

PhD in Engineering, Professor, Department of Ship Power Plants and Technical Operation

О.М. Kononova, Odesa National Maritime University, Odesa, Ukraine

PhD in Engineering, Associate Professor, Department of Mechanical Engineering and Engineering Mechanics

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