TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Non-penetrating masts: dynamics and hydrodynamics



Full text article ( in russian)

Year

 
2019

Issue

 
387

Volume

 
1

Pages

 
51-60

Caption

 
Non-penetrating masts: dynamics and hydrodynamics

Authors

 
Grigorov M., Yegorova T.Zaitsev V., Zelensky B., Tyushkevich V.

Keywords

 
non-penetrating mast, shortened fairing, vortex-induced vibration

DOI

 
10.24937/2542-2324-2019-1-387-51-60

Summary

 
Object and purpose of research.This paper studies vortex-induced vibration of submarine masts. The purpose of this work is to update the theory of vortex-induced vibration taking into account the specifics of new-generation retractable devices: non-penetrating masts. It was important An important task in this study was to obtain information on dynamics and hydrodynamics of shortened fairings applied for non-penetrating masts, as well as to develop vibration strength and vibration resistance methods for these devices
Subject matter and methodsThe task was accomplished by means of experimental and analytical research methods used in hydrodynamics of bluff structures.
Main results.The study has shown that vortex-induced vibration of non-penetrating masts differs considerably from vortex- induced vibration of conventional, penetrating, masts. It has also been shown that existing calculation procedures for vortex- induced vibration of penetrating masts cannot yield reliable predictions for non-penetrating ones, so they have to be revised The results of this study made it possible to develop methodological basis for preliminary prediction of vortex-induced vibration and hydrodynamic load assessment at the design stage of non-penetrating masts.
Conclusion.The new data given in this paper about vortex-induced vibration peculiarities of non-penetrating masts refine the results obtained over many years of investigations about this complex and practically important phenomenon.

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ISSN (print) 2542-2324 / ISSN (online) 2618-8244

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