Parametric instability of deep-water risers

Author: ftqd

August undefined, 2024

WebMathieu instability analysis of deepwater top-tensioned risers. Journal of Ship Mechnics, 2014. [10] Tang Yougang, Shao Weidong, Wang Liyuan, Gui Long. Dynamic response analysis for coupled parametric vibration and vortex-induced vibration of top-tensioned risers in deep-sea. Engineering Mechnics, 2013. [11] Kuiper G L, Brugmans J, Metrikine AV … WebAn analysis of parametric instability of risers Vortex-Induced Vibration (VIV) of Deep Water Riser - Duration: 0:13. University of ULSAN, Adv Comp Eng Lab À°YP ÈpÁ 瓅醬妽耀 CFD/貹壂È瀀泂 578 views 0:13 Riser Analysis In Abaqus - auto.joebuhlig.com Modeling Contact using the General Contact method in Abaqus This article is

(a) Introduction bifurcations and stabilities [1] = (b) (c)

WebThis paper discusses modeling aspects related to dynamic analysis of deep water drilling risers. These risers must have a heave compensator that maintains a near constant tension in the riser independent on platform motions. Traditional riser analysis will apply constant top tension or a simple parametric model that may give approximate tension ... Webattention to the risers’ vortex-induced vibration as well as the parametric excitation. Nevertheless, the multi-frequency excitation and the higher-order instability zones are always neglected, and just the first instability zone is taken into consideration[5]. Once the multi-frequency parametric excitations are included, the influences jesus heals the blind man children\u0027s lesson

Internal flow effect on the parametric instability of …

http://publications.isope.org/proceedings/ISOPE/ISOPE%202421/data/pdfs_Vol2/2135-21TPC-0336.pdf Webtrifugal and Coriolis force on the parametric instability of deep water drilling risers and found that Coriolis force can make the combination resonance much more profound. However, internal flow is not a steady single-phase flow, whereas a multiphase flow always includes oil, gas, and water. Given the low temperature and high pressure in WebDec 31, 2004 · This phenomenon is called parametric instability. The objective of this study is to gain better insight in this phenomenon. The focus is on the occurrence of instability for deep-water risers induced by the variation of the effective tension in time. inspiration at the village las vegas

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Parametric Instability of Deep-Water Risers - TU Delft

WebParametric Instability of Deep-Water Risers J. Brugmans Published 2005 Engineering During the last decade, some major changes took place in the offshore industry. These … WebNov 1, 2015 · The parametric instability of a top-tensioned riser (TTR) in irregular waves was predicted for multi-frequency excitation in [45]. A coupled dynamic analysis of a marine riser under... jesus heals the blind man bible verseWebDuring the service period of a riser, the periodic heave motion of the top floating platform due to waves changes the axial force acting on the riser, thus leading to the parametric … jesus heals the blind man and he sees trees

"WebSevere slugging in deepwater risers is a serious flow assurance problem that endangers the reliability of subsea production systems (pipelines, risers, and jumpers) by exposing them to fatigue loading, structural instability, and material damage due to its cyclic behaviour. Modelling this problem is very challenging because of its " - Parametric instability of deep-water risers

Parametric instability of deep-water risers

(a) Introduction bifurcations and stabilities [1] = (b) (c)

WebJan 12, 2024 · This study investigates the effects of multiphase internal flows that consider hydrate phase transitions on the parametric stability of marine risers. A numerical model … WebThe objective of this paper is to investigate the dynamic instability of deepwater top-tensioned risers ... J. Brugmans and A. V. Metrikine, Destabilization of deep-water risers by a heaving platform, J. Sound Vib. 310 ... Yang, F. Xiao and P Xu, Parametric instability prediction in a top-tensioned riser in irregular waves, Ocean Eng. 70 ...

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WebJun 29, 2024 · There are many technical challenges to maintain the structural safety of deep-water risers, especially for ultra-deep water operation in an extremely harsh environment. ... This implies that the parametric instability of the riser system becomes more violent and the operating conditions become more severe. Due to the effect of … WebDec 1, 2024 · The instability diagram differed significantly from that for single-frequency parametric excitation. From the above review, it is seen that a number of investigations have focused on the Mathieu instability problem while ignoring transverse loading on the TTRs.

WebFeb 1, 2024 · The stability charts of a deepwater drilling riser at different internal flow velocities are plotted by applying the Floquet theory, and the effects of the centrifugal … WebDuring the service period of a riser, the periodic heave motion of the top floating platform due to waves changes the axial force acting on the riser, thus leading to the parametric vibration of the risers. Parametric resonance is an unstable vibration caused by parametric excitation, which leads to the exponential increase in the vibration ...

WebKEY WORDS: Top-tensioned riser, Mathieu Equation, Parametric instability, parametric resonance, Differential Quadrature Method (DQM). INTRODUCTION Risers has been massively used in offshore structures to convey the fluids between underwater bases and platforms. However, suffering the excitation from the motions of platform and the current … WebThis phenomenon is called parametric instability. The objective of this study is to gain better insight in this phenomenon. The focus is on the occurrence of instability for deep-water risers induced by the variation of the effective tension in time.

WebRiser structure, complex pre-stress, top-tensioned riser, parametric vibration, Mathieu instability Date received: 4 September 2024; accepted: 12 December 2024 Handling Editor: Jianqiao Ye Introduction With the growing demand for crude oil and gas in recent years, deep-water exploitation has become the focus of offshore equipment.

WebThe study is focused in the parametric instability of the deep-sea risers due to the platform heave motions. As offshore hydrocarbon resources exploration and exploitation moving to much deeper waters, risers play more important roles than before, and face with many technological challenges. inspiration assisted living facilityWebJun 20, 2024 · The parametric resonance, which could induce severe consequence like fatigue, and further lead to oil-spill risk, has been vastly discussed in about the offshore pipelines. In this paper, a top-tensioned riser has been modelled, and the parametric instability of such structure has been analyzed with Differential Quadrature Method (DQM). inspiration atmungWebOct 8, 2024 · The top-tensioned riser is an important equipment in offshore oil and gas development. The hydro-pneumatic tensioner is an essential device to ensure the safety of the top-tensioned riser. To investigate the dynamic performance of the marine platform hydro-pneumatic tensioner, this paper proposed a first-order Taylor approximation … inspiration at south pointeWebDec 31, 2004 · This phenomenon is called parametric instability. The objective of this study is to gain better insight in this phenomenon. The focus is on the occurrence of instability … jesus heals the blind man gamesWebJan 15, 2015 · Parametric instability of a riser is caused by fluctuation of its tension in time due to the heave motion of floating platform. Many studies have tackled t Parametric … inspiration at restWebJan 29, 2024 · The parametric vibration instability of a riser is studied in consideration of a complex pre-stress distribution. Differential equations of the riser are derived according … jesus heals the blind man craft ideasWebattention to the risers’ vortex-induced vibration as well as the parametric excitation. Nevertheless, the multi-frequency excitation and the higher-order instability zones are … inspiration appeal