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http://dx.doi.org/10.5574/KSOE.2016.30.4.310

Self-Burial Structure of the Pipeline with a Spoiler on Seabed  

Lee, Woo-Dong (Institute of Marine Industry, Gyeongsang National University)
Hur, Dong-Soo (Department of Ocean Civil Engineering, Gyeongsang National University)
Kim, Han-Sol (Department of Coastal Management, Geosystem Research Corporation)
Jo, Hyo-Jae (Naval Architecture and Ocean Systems Engineering, Korea Marine and Ocean University)
Publication Information
Journal of Ocean Engineering and Technology / v.30, no.4, 2016 , pp. 310-319 More about this Journal
Abstract
If a spoiler was attached to the pipeline investigated in a previous study, a strong flow and vortex at the lower part caused scouring and thus an asymmetric pressure distribution, which assisted in the analysis of the self-burial structure where a down force was applied to the pipe. However, only the fluid-pipe interaction was considered, excluding the medium (seabed), when practically burying the pipeline. Thus, this study applied a numerical model (LES-WASS-2D) to directly analyze the non-linear interactions among the fluid, pipe, and seabed in order to perform numerical simulations of a pipeline with a spoiler installed on the seabed. This allowed the self-burial mechanism of a pipeline with a spoiler to be analyzed in the same context as the previous study that considered only the fluid-pipe interaction. However, when a pipeline was installed on the seabed, a strong flow and vortex were found at the front of the bottom, and a spoiler accelerated the fluid resistances. This hydraulic phenomenon will reinforce the scouring and down force on the pipeline. In the general consideration of the numerical analysis results by the specifications and arrangements of the spoiler, a pipeline with a spoiler was found to be the most effective for the self-burial function.
Keywords
Pipeline with spoiler; Self-burial structure; Vorticity; Down force; LES-WASS-2D;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Brackbill, J.U., Kothe, D.B, Zemach, C., 1992. A Continuum Model for Modeling Surface Tension. Journal of Computational Physics, 100, 335-354.   DOI
2 Cheng, L., Chew, L., 2003. Modelling of Flow around a Near-Bed Pipeline with a Spoiler. Ocean Engineering, 30,1595-1611.   DOI
3 Chiew, Y., 1993. Effect of Spoilers on Wave Induced Scour at Submarine Pipelines. Journal of Waterway, Port, Coastal, Ocean Engineering, 417, 417-428.
4 Ergun, S., 1952. Fluid Flow through Packed Columns. Chemical Engineering Progress, 48(2), 89-94.
5 Germano, M., Piomelli, U., Moin, P, Cabot, W.H., 1991. A Dynamic Subgrid-Scale Eddy Viscosity Model. Physics of Fluids, 3, 1760-1765.   DOI
6 Han, Y., 2012. Study on the Submarine Pipeline with Flexible Spoilers. Key Engineering Materials, 501, 431-435.   DOI
7 Hur, D.S., Kim, C.H., Kim, D.S., 2007. Wave-Induced Soil Response around Submarine Pipeline. Journal of ocean engineering and technology, 21(1), 31-39(in korean).
8 Hur, D.S., Lee, K.H., Choi, D.S., 2011. Effect of the Slope Gradient of Submerged Breakwaters on Wave Energy Dissipation. Engineering Applications of Computational Fluid Mechanics, 5, 83-98.   DOI
9 Hulsbergen, C.H., 1984. Stimulated Self-Burial of Submarine Pipelines. Proceedings of the 16th Offshore Technology Conference, OTC 4667, 171-177.
10 Hulsbergen, C.H., Bijker, H., 1989. Effect of Spoilers Submarine Pipeline Stability. Proceedings of the 21st Offshore Technology Conference, OTC 6154, 337-350.
11 Lee, W.D., Hur, D.S., Kim, H.S., Jo, H.J., 2016. Numerical Analysis on Self-Burial Mechanism of Submarine Pipeline with Spoiler under Steady Flow. Journal of Korean Society of Coastal and Ocean Engineers, 28(3), 146-159.   DOI
12 Liang, D., Cheng, L., 2005. Numerical Modeling of Flow and Scour below a Pipeline in Currents Part I. Flow Simulation. Coastal Engineering, 52, 25-42.   DOI
13 Lilly, D.K., 1992. A Proposed Modification of the Germano Sub Grid-Scale Closure Method. Physics of Fluids, 4, 633-635.   DOI
14 Liu, S., Masliyah, J.H., 1999. Non-Linear Flows in Porous Media. Journal of Non-Newtonian Fluid Mechanics, 86, 229-252.   DOI
15 Kazeminezhad, M.H., 2013. Numerical Simulation of Oscillatory Flow around Submarine Pipelines. Journal of Coastal Research, Special Issue 65, ICS 2013, 1, 260-265.
16 Oner, A.A., 2010. The Flow around a Pipeline with a Spoiler. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering, 224(1), 109-121.   DOI
17 Sakakiyama, T., Kajima, R., 1992. Numerical Simulation of Nonlinear Wave Interacting with Permeable Breakwater. Proceedings of 23rd International Conference on Coastal Engineering, ASCE, 1517-1530.
18 Smagorinsky, J., 1963. General Circulation Experiments with the Primitive Equation. Monthly Weather Review, 91, 99-164.   DOI
19 Yang, L., Shi, B., Guo, Y., Wen, X., 2012. Calculation and Experiment on Scour Depth for Submarine Pipeline with a Spoiler. Ocean Engineering, 55, 191-198.   DOI
20 Zamankhan. P., 2009. Analysis of Submarine Pipeline Scour using Large-Eddy Simulation of Dense Particle-Liquid Flows. Journal of Offshore Mechanics and Arctic Engineering, ASME. 131(2), 021604.   DOI
21 Zhao, J., Wang, X., 2009. CFD Numerical Simulation of the Submarine Pipeline with a Spoiler. Journal of Offshore Mechanics and Arctic Engineering, 131, 031601.   DOI
22 Zhu, H., Qi, X., Lin, P., Yang, Y., 2013. Numerical Simulation of Flow around a Submarine Pipe with a Spoiler and Current-Induced Scour Beneath the Pipe. Applied Ocean Research, 41, 87-100.   DOI
23 Bakhtiary, A.D., Zeinali, M., 2008. Numerical Simulation of Hydrodynamic Forces on Submarine Pipeline with a Spoiler. International Conference on Coasts, Ports and Marine Structures(ICOPMAS), Ports and Marine Organization, 8, 1-12.
24 Barendse, C.A.M., 1988. Hydrodynamic Forces on a Near-Bed Offshore Pipeline with Spoiler, During the Selfburying Process. TU Delft, Faculty of Civil Engineering, 193.
25 Beek, F.A.V., Wind, H.G., 1990. Numerical Modelling of Erosion and Sedimentation around Offshore Pipelines. Coastal Engineering, 14, 107-128.   DOI