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Volume 17, Issue 33 (5-2021)
Marine Engineering 2021, 17(33): 1-10 |
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Pooyarad A, Akbari H. Lagrangian Modeling of Regular Wave Effect on Sea Pipeline on Permeable Sea Bed. Marine Engineering 2021; 17 (33) :1-10
URL: http://marine-eng.ir/article-1-788-en.html
URL: http://marine-eng.ir/article-1-788-en.html
1- Tarbiat Modares University
Abstract: (3024 Views)
Using offshore pipelines is the most common way to transport oil and gas extracted from oil and gas fields. Since the pipelines are usually located on porous seabed, current pattern around them is complicated. In this study, based on the weakly compressible smoothed particles hydrodynamic method, new numerical model has been developed that is capable of simulating flow inside a porous medium. In addition, to minimize wave reflections, two different methods i.e. using gradual velocity damper and using a sloped beach geometry are studied and a hybrid method is introduced as an effective new wave absorbing system. Wave interactions with pipeline on and spaced from permeable and impermeable beds are studied by means of the introduced method. Distance between pipeline and seabed is investigated for both conditions. The introduced numerical model is validated via comparing its results with experimental data and similar numerical results. The results confirm that the developed numerical model can be used efficiently in modeling wave interaction with pipelines located on either permeable or impermeable seabed. In addition, wave reflections can be minimized by means of the introduced hybrid wave absorption system
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