Submarine pipeline is one of the most important oil transportation components; pipeline failure due to overspan is the most serious failure mechanism. There are four reasons of pipeline span formation, including erosion of seabed, bumpy seabed, submarine pipeline climbing slope, and pipeline ascending to offshore platform. The Hangzhou Bay submarine pipeline is the most important subproject of the Yong-Hu-Ning network, and it is also the biggest long-distance pipeline for crude oil in China. Due to the dynamic nature of Hangzhou Bay, including high tides and high current amplified by the shallow waters, a self-burial method was selected as the best solution. By increasing the velocity of the stream between the pipeline and the seabed, shear stress on the seabed was enhanced. This localized increase in shear stress causes the seabed under the pipe to erode more quickly and facilitates self-burial of the pipe. To facilitate self-burial, a nonmetallic vertical fin is fastened to the top of the pipeline. In this paper flow around a pipeline with and without a spoiler near a smooth wall is simulated with FLUENT version 6.1. It is found that the velocity affected the shear stress, and the height of the spoiler does not have an obvious effect on the shear stress.
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e-mail: jpzhao@njut.edu.cn
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August 2009
Safety And Reliability
CFD Numerical Simulation of the Submarine Pipeline With a Spoiler
Jianping Zhao,
Jianping Zhao
School of Mechanical Engineering,
e-mail: jpzhao@njut.edu.cn
Nanjing University of Technology
, Nanjing 210009, China
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Xuechao Wang
Xuechao Wang
School of Mechanical Engineering,
Nanjing University of Technology
, Nanjing 210009, China
Search for other works by this author on:
Jianping Zhao
School of Mechanical Engineering,
Nanjing University of Technology
, Nanjing 210009, China
e-mail: jpzhao@njut.edu.cn
Xuechao Wang
School of Mechanical Engineering,
Nanjing University of Technology
, Nanjing 210009, China
J. Offshore Mech. Arct. Eng. Aug 2009, 131(3): 031601 (5 pages)
Published Online: May 28, 2009
Article history
Received:
February 28, 2008
Revised:
December 4, 2008
Published:
May 28, 2009
Citation
Zhao, J., and Wang, X. (May 28, 2009). "CFD Numerical Simulation of the Submarine Pipeline With a Spoiler." ASME. J. Offshore Mech. Arct. Eng. August 2009; 131(3): 031601. https://doi.org/10.1115/1.3124127
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