Study on Developing Process of Local Scour around a Submarine Pipeline with a Spoiler

سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 224

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شناسه ملی سند علمی:

IHC19_048

تاریخ نمایه سازی: 25 اسفند 1399

چکیده مقاله:

Offshore pipelines are buried in the seabed to be protected from the damage caused by hydrodynamic forces or by human activities. However, because of soil erosion and interaction of currents with the pipeline on the moveable seabed, the processes of local scouring and, sometimes, self-burial of pipelines take place. To increase the rate and extent of scouring, the technique of attaching a spoiler to the pipeline has been developed. through the parameters of the measured instantaneous and time-averaged patterns of the velocity vector field and the streamline topology. In this study, the effect of the spoiler on the process of scouring is investigated. The results indicated that the attachment of the spoiler to the pipeline increases the length of the upstream and downstream scour hole. Moreover, on average, increased the scour depth of the pipe up to 62% rather than simple pipe.

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نویسندگان

Mojtaba damroudi

Director of Design Department consulting engineering of haft pargar sayal jam, Bojnourd, Iran

Kazem Esmaili

Department of water science and Engineering, Ferdowsi university of mashhad, Iran

Seyyd Hossein Rajaei

Researcher at Khorasan Razavi Agriculture, Natural Resources Research and Education, Iran

Majid Vahdani Asadi

Water resources development expert of Water and Sewerage Company, Bojnourd, Iran