Abstract: This paper presents the calculation of the hydrodynamic forces exerted on an oscillating circular cylinder when it moves perpendicular to its axis in infinitely deep water covered by compressed ice. The cylinder can oscillate both horizontally and vertically in the course of its translational motion. In the linear approximation, a solution is found for the steady wave motion generated by the cylinder within the hydrodynamic set of equations for the incompressible ideal fluid. It is shown that, depending on the rate of ice compression, both normal and anomalous dispersion can occur in the system. In the latter case, the group velocity can be opposite to the phase velocity in a certain range of wavenumbers. The dependences of the hydrodynamic loads exerted on the cylinder (the added mass, damping coefficients, wave resistance and lift force) on the translational velocity and frequency of oscillation were studied. It was shown that there is a possibility of the appearance of negative values for the damping coefficients at the relatively big cylinder velocity; then, the wave resistance decreases with the increase in cylinder velocity. The theoretical results were underpinned by the numerical calculations for the real parameters of ice and cylinder motion.

Cite: Stepanyants Y. , Sturova I.
Hydrodynamic Forces Exerting on an Oscillating Cylinder under Translational Motion in Water Covered by Compressed Ice
Water (Switzerland). 2021. V.13. N6. 822 :1-21. DOI: 10.3390/w13060822 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Jan 20, 2021
Accepted:	Mar 10, 2021
Published print:	Mar 17, 2021

Identifiers:

Web of science:	WOS:000651928100001
Scopus:	2-s2.0-85102799835
Elibrary:	46759928
OpenAlex:	W3139358604

Citing:

DB	Citing
Scopus	6
OpenAlex	6
Elibrary	2
Web of science	6

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