Henry Francis Annapeh
Hydrodynamic loads on a group of six structures of different cross-sections in uniform and sheared flow.
Annapeh, Henry Francis; Kurushina, Victoria
Authors
Victoria Kurushina
Abstract
The estimates of hydrodynamic forces for a group of structures represent a challenge for the design of offshore systems, as they are subject to changes with a variation in flow profiles. The fluctuating effects may be more pronounced or, on the contrary, suppressed if the cross-sectional shape of structures in an array is altered. The present work performs a series of 2D numerical simulations for the flow past six identical stationary cylinders of three distinct geometrical shapes arranged in a 2 × 3 matrix configuration. The flow profiles considered have an averaged velocity corresponding to the critical flow regime of a Reynolds number of 2.5 × 105. The detached eddy simulation k–ω SST turbulence model is employed to perform a comprehensive investigation of the fluid force coefficients, their frequencies and vortex formation patterns. The effect of the spacing ratio varied simultaneously among the structures from 2 to 7 is considered in conjunction with the change in the flow profile and the cylinders’ cross-section. The results of simulations show a higher mean drag on the upstream cylinders, reduced mean drag on the mid- and downstream cylinders with the second cross-sectional shape, and a higher mean drag on the cylinders with the third cross-sectional shape, compared to the original circular cylinders.
Citation
ANNAPEH, H.F. and KURUSHINA, V. 2023. Hydrodynamic loads on a group of six structures of different cross-sections in uniform and sheared flow. Journal of marine science and engineering [online], 11(2), article number 383. Available from: https://doi.org/10.3390/jmse11020383
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 3, 2023 |
Online Publication Date | Feb 9, 2023 |
Publication Date | Feb 28, 2023 |
Deposit Date | Feb 13, 2024 |
Publicly Available Date | Feb 19, 2024 |
Journal | Journal of Marine Science and Engineering |
Electronic ISSN | 2077-1312 |
Publisher | MDPI |
Peer Reviewed | Peer Reviewed |
Volume | 11 |
Issue | 2 |
Article Number | 383 |
DOI | https://doi.org/10.3390/jmse11020383 |
Keywords | Hydrodynamic forces; Vortex-induced loads; Uniform flow; Planar sheared flow; Drag coefficient; Lift coefficient |
Public URL | https://rgu-repository.worktribe.com/output/2166737 |
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https://creativecommons.org/licenses/by/4.0/
Copyright Statement
© 2023 by the authors. Licensee MDPI, Basel, Switzerland.
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