Theory of the Ship and Construction Mechanics           
Original article
https://doi.org/10.24866/2227-6858/2022-1/30-37

Zemlyak V., Vasilyev A., Kozin V.

VITALIY L. ZEMLYAK, Candidate of Physico-Mathematical Sciences, Associate Professor, vellkom@list.ru, http://orcid.org/0000-0002-3218-5738
Department of Technical Disciplines
ALEXEY S. VASILYEV, Candidate of Engineering Sciences, Associate Professor, vasil-grunt@mail.ru, http://orcid.org/0000-0001-7783-0000
Department of Technical Disciplines
Sholom-Aleichem Priamursky State University
Birobidzhan, Russia
VICTOR M. KOZIN, Doctor of Engineering Sciences, Professor, Chief Researcher
of the Laboratory for Problems of Creation and Processing of Materials and Products, vellkom@list.ru
Institute of Machine Science and Metallurgy FEB RAS
Komsomolsk-on-Amur, Russia

Determination of the lifting force and hydrodynamic moment
during the motion of a submerged body near the free surface of a liquid

Abstract: Forces and moments on a submerged body by liquid can have a significant effect on the nature of its movement on a little depth. Although it is very important to study these parameters due to their effect on the safety and maneuverability of an underwater vehicle, there are not many theoretical and especially experimental research on this topic. For the first time the authors of the present work have experimentally determined the trim angles of a submerged body model, moving in a near-surface water environment in the experimental basin. Using the ANSYS 19 R2 Academic Research software package, the forces and moments acting on a body of given geometry moving near the free surface of a liquid at different speeds were numerically determined. The influence of the models’ shape, namely the coefficient of fineness of midship section and the block coefficient, on the investigated parameters has been determined.

Keywords: submerged body, lifting force, hydrodynamic moment, free surface

See the reference in English at the end of the article

For citation: Zemlyak V., Vasilyev A., Kozin V. Determination of the lifting force and hydrodynamic moment during the motion of a submerged body near the free surface of a liquid. FEFU: School of Engineering Bulletin. 2022;(50):30-37. (In Russ.). https://doi.org/10.24866/2227-6858/2022-1/30-37