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Titolo:
Effect of fluid column dynamics on longitudinal vibrations of an ultra deepwater riser covered by an orifice plug
Autore:
Tikhonov, VS; Safronov, AI;
Indirizzi:
Aquat Co, Moscow 113093, Russia Aquat Co Moscow Russia 113093Aquat Co, Moscow 113093, Russia NTC Energocosmos, Moscow 115230, Russia NTC Energocosmos Moscow Russia 115230 nergocosmos, Moscow 115230, Russia
Titolo Testata:
OCEAN ENGINEERING
fascicolo: 1, volume: 29, anno: 2002,
pagine: 99 - 112
SICI:
0029-8018(200201)29:1<99:EOFCDO>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Keywords:
drilling riser; aluminium alloys; disconnected mode; longitudinal vibrations; compressed fluid; pipe wall; elasticity; plug-hole; storm; waves;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Tikhonov, VS Aquat Co, 94A Dubininskaya St, Moscow 113093, Russia Aquat Co94A Dubininskaya St Moscow Russia 113093 93, Russia
Citazione:
V.S. Tikhonov e A.I. Safronov, "Effect of fluid column dynamics on longitudinal vibrations of an ultra deepwater riser covered by an orifice plug", OCEAN ENG, 29(1), 2002, pp. 99-112

Abstract

The paper studies longitudinal vibrations of an ultra-deepwater drilling riser whose bottom end is disconnected from the sea floor and covered by a plug (a blind one or the one with a hole). An elastic shell is used as a model of a riser pipe. The fluid column motion in the riser is described by the Navier-Stokes equation for a compressible fluid. Losses of fluid pressureduring its flowing through a hole in the plug are taken into account. Solution of the riser equations is carried out in the frequency domain. Analysis of the effect which the riser length, wave period and height, and the plug-hole diameter on the amplitude of the riser's tension vibrations is conducted. A riser manufactured of strong aluminium alloys, some of prospective materials for ultra deepwater drilling, was considered as a prototype. It has been shown that risers 2000-4000 m long, plug-hole, and a riser 6000 m long with plug-hole of 0.087 m in diameter can withstand wave height of > 15m throughout the frequency range. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 21:40:36