A study on practical method to estimate drag of super-cavitating underwater vehicles

In this paper, a simple practical method to estimate the drag of Super-Cavitating Underwater Vehicles (SCUV) is proposed that can obtain the drag with only principal dimensions in an initial design stage. SCUV is divided into cavitator, forebody, afterbody, base, and control fin and the drag of each...

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Autores principales:	Jung-Kyu Choi, Hyoung-Tae Kim
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Super cavitation Underwater vehicle Drag estimation Cavitator Cone Wedge Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989
Acceso en línea:	https://doaj.org/article/8a2beb89328e4998b0c54cd2374f73d1
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id	oai:doaj.org-article:8a2beb89328e4998b0c54cd2374f73d1
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spelling	oai:doaj.org-article:8a2beb89328e4998b0c54cd2374f73d12021-11-24T04:28:29ZA study on practical method to estimate drag of super-cavitating underwater vehicles2092-678210.1016/j.ijnaoe.2021.10.007https://doaj.org/article/8a2beb89328e4998b0c54cd2374f73d12021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2092678221000595https://doaj.org/toc/2092-6782In this paper, a simple practical method to estimate the drag of Super-Cavitating Underwater Vehicles (SCUV) is proposed that can obtain the drag with only principal dimensions in an initial design stage. SCUV is divided into cavitator, forebody, afterbody, base, and control fin and the drag of each part is estimated. The formulas for the drag coefficient are proposed for the disk and cone type cavitators and wedges used as control fins. The formulas are a function of cavitation number, cone or wedge angle, and Reynolds number. This method can confirm the drag characteristics of SCUV that the drag hump appears according to the coverage of the body by the cavity and the cavitator drag remains only when the entire body is covered by cavity. Applying this method to SCUV of various shapes, it is confirmed that the effects of cavitating and non-cavitating conditions, cavitator and body shape, and speed could be found.Jung-Kyu ChoiHyoung-Tae KimElsevierarticleSuper cavitationUnderwater vehicleDrag estimationCavitatorConeWedgeOcean engineeringTC1501-1800Naval architecture. Shipbuilding. Marine engineeringVM1-989ENInternational Journal of Naval Architecture and Ocean Engineering, Vol 13, Iss , Pp 817-832 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Super cavitation Underwater vehicle Drag estimation Cavitator Cone Wedge Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989
spellingShingle	Super cavitation Underwater vehicle Drag estimation Cavitator Cone Wedge Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989 Jung-Kyu Choi Hyoung-Tae Kim A study on practical method to estimate drag of super-cavitating underwater vehicles
description	In this paper, a simple practical method to estimate the drag of Super-Cavitating Underwater Vehicles (SCUV) is proposed that can obtain the drag with only principal dimensions in an initial design stage. SCUV is divided into cavitator, forebody, afterbody, base, and control fin and the drag of each part is estimated. The formulas for the drag coefficient are proposed for the disk and cone type cavitators and wedges used as control fins. The formulas are a function of cavitation number, cone or wedge angle, and Reynolds number. This method can confirm the drag characteristics of SCUV that the drag hump appears according to the coverage of the body by the cavity and the cavitator drag remains only when the entire body is covered by cavity. Applying this method to SCUV of various shapes, it is confirmed that the effects of cavitating and non-cavitating conditions, cavitator and body shape, and speed could be found.
format	article
author	Jung-Kyu Choi Hyoung-Tae Kim
author_facet	Jung-Kyu Choi Hyoung-Tae Kim
author_sort	Jung-Kyu Choi
title	A study on practical method to estimate drag of super-cavitating underwater vehicles
title_short	A study on practical method to estimate drag of super-cavitating underwater vehicles
title_full	A study on practical method to estimate drag of super-cavitating underwater vehicles
title_fullStr	A study on practical method to estimate drag of super-cavitating underwater vehicles
title_full_unstemmed	A study on practical method to estimate drag of super-cavitating underwater vehicles
title_sort	study on practical method to estimate drag of super-cavitating underwater vehicles
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/8a2beb89328e4998b0c54cd2374f73d1
work_keys_str_mv	AT jungkyuchoi astudyonpracticalmethodtoestimatedragofsupercavitatingunderwatervehicles AT hyoungtaekim astudyonpracticalmethodtoestimatedragofsupercavitatingunderwatervehicles AT jungkyuchoi studyonpracticalmethodtoestimatedragofsupercavitatingunderwatervehicles AT hyoungtaekim studyonpracticalmethodtoestimatedragofsupercavitatingunderwatervehicles
_version_	1718415990271770624

A study on practical method to estimate drag of super-cavitating underwater vehicles

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