Steady current induced seabed scour around a vibrating pipeline

Gao, Fu‐Ping; Yang, Bing; Wu, Ying; Yan, Shunping

doi:10.1016/j.apor.2007.01.004

Cited by 87 publications

(32 citation statements)

References 14 publications

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“…A hydro-elastic facility composed of pulley wheels and springs was used to simulate the VIV of piggyback pipelines and the displacement of the pipeline was measured with a laser sensor. Details of the modeling system of VIV for piggyback pipelines can be referred to in Gao et al [35].…”

Section: Optimal Configurations Based On Minimum Amplitude Of Vivmentioning

confidence: 99%

Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines

Zang

Gao

Cui

2013

Applied Ocean Research

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited.

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Section: Optimal Configurations Based On Minimum Amplitude Of Vivmentioning

confidence: 99%

Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines

Zang

Gao

Cui

2013

Applied Ocean Research

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“…Thus, the vibration of the spanning pipeline and soil scour are always coupled. Gao et al (2006) found that there often exist two phases in the process of sand scouring for a pipeline with an initial small embedment, i.e. Phase I: scour beneath the pipe without VIV, and Phase II: scour with VIV of the pipe.…”

Section: Viv Of a Pipe Near A Scoured Seabedmentioning

confidence: 99%

“…Sumer et al (1988) and Gao et al (2006) studied interactions between a vibrating pipeline and an erodible bed experimentally. In both investigations, the pipeline was allowed to vibrate in the transverse direction.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on onset of Vortex-Induced Vibration of a pipeline near a seabed

Zang¹,

Gao²

2014

Scour and Erosion

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The critical flow velocity for onset of Vortex-Induced Vibration (VIV) of a pipeline near a rigid or a scoured seabed was experimentally investigated. The model pipe was initially positioned at a small gap to a rigid seabed or partially embedded in a silty seabed. The value of the embedment/gap-to-diameter ratio was changed from −0.2 to 1.0. A statistic form of the flow velocity, which is composed of the mean value and the Root-Mean-Square Deviation (RMSD) of the flow velocity, is applied in quantifying the onset condition of VIV. It was found that the onset of VIV is attributed to the joint contributions of both the mean flow and the turbulent component of the flow. The correlation of the critical reduced velocity with the initial position of the pipeline and the scour depth were concluded based on the experimental results.

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“…They also determined the critical condition corresponding to the onset of scour below pipelines in currents/waves. Gao et al [5] investigated the coupling effects between pipeline vibration and sand scour numerically. Their study revealed that the equilibrium scour depth decreases with increasing initial gap-to-diameter ratio.…”

Section: Introductionmentioning

confidence: 99%

A parallel three-dimensional scour model to predict flow and scour below a submarine pipeline

Alam

Cheng

2010

Open Physics

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Abstract:A three-dimensional Lattice Boltzmann flow and scour model is developed to simulate time-dependent scour below a submarine pipeline. The proposed model presented in this paper is able to predict streamwise and spanwise propagations of scour with respect to lattice unit of time. It is evident from this study that the existence of a spiral vortex in the proximity of the span shoulder is quite noteworthy. It is revealed that the critical regime of the 2-D scour process is found to be up to one pipe diameter away in both directions from the middle of the unsupported length of pipelines. The equilibrium maximum scour depth and the shape of streamwise equilibrium scour hole compare well with the available experimental data. The speed of propagation of scour along the pipeline length maintains an almost constant rate, which is consistent with the experimental observations found in literature. In addition, it is seen that the scour slope at the shoulder region remains fairly constant throughout the whole scour process.

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Steady current induced seabed scour around a vibrating pipeline

Cited by 87 publications

References 14 publications

Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines

Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines

Experimental study on onset of Vortex-Induced Vibration of a pipeline near a seabed

A parallel three-dimensional scour model to predict flow and scour below a submarine pipeline

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