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Numerical Analysis on Self-Burial Mechanism of Submarine Pipeline with Spoiler under Steady Flow
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 Title & Authors
Numerical Analysis on Self-Burial Mechanism of Submarine Pipeline with Spoiler under Steady Flow
Lee, Woo Dong; Hur, Dong Soo; Kim, Han Sol; Jo, Hyo Jae;
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 Abstract
This study used Navier-Stokes Solver(LES-WASS-2D) for analyzing hydrodynamic characteristics with high order in order to analyze self-burial mechanism of pipeline with spoiler under steady flow. For the validity and effectiveness of numerical model used, it was compared and analyzed with the experiment to show flow characteristics around the pipeline with and without the spoiler. And the hydraulic(flow, vortex, and pressure) and force characteristics were numerically analyzed around the pipeline according to the incident velocity, and shape and arrangement of spoiler. Primarily, if the spoiler is attached to the pipeline, the projected area is increased resulting in higher flow velocity toward the back and strong vortex caused by wake stream in the back. Secondly, the spoiler causes vertically asymmetric flow and vorticity fields and thus asymmetric pressure field. It increases the asymmetry of force on the pipe and thus develops large downward fluid force. Both of them are the causes of selfburying of the pipeline with spoiler.
 Keywords
submarine pipeline with spoiler;self-burial mechanism;steady flow;fluid force;Navier-Stokes solver;
 Language
Korean
 Cited by
1.
해저지반에 설치된 스포일러 부착형 파이프라인의 자가매설 기능분석,이우동;허동수;김한솔;조효제;

한국해양공학회지, 2016. vol.30. 4, pp.310-319 crossref(new window)
2.
2차원 연성모델을 적용한 불투과성 잠제 전면의 국부세굴 모의,이우동;이재철;진동환;허동수;

한국해양공학회지, 2016. vol.30. 6, pp.484-497 crossref(new window)
1.
Numerical Simulation of Local Scour in Front of Impermeable Submerged Breakwater Using 2-D Coupled Hydro-morphodynamic Model, Journal of Ocean Engineering and Technology, 2016, 30, 6, 484  crossref(new windwow)
2.
Self-Burial Structure of the Pipeline with a Spoiler on Seabed, Journal of Ocean Engineering and Technology, 2016, 30, 4, 310  crossref(new windwow)
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