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- W4313406355 startingPage "2019" @default.
- W4313406355 abstract "When a pipeline is laid on the seabed, local scour often occurs below it due to sea currents. In practical engineering, there are some cases that two pipelines laid on the seabed need to cross with each other. The complex flow structures around two crossing pipelines make the scour characteristics different from that of an isolated single pipeline. In this study, scour below two crossing pipelines was simulated numerically using the CFD software Flow-3D. The study is focused on the effect of the intersecting angle on the equilibrium depth and time scale of scour below the crossing position. Five intersecting angles, i.e., α = 0°, 15°, 30°, 45° and 90°, are considered, where α = 0° and 90° represent two pipelines parallel and perpendicular to each other, respectively. The results show that the equilibrium depth and the time scale of scour below the two crossing pipelines are greater than those of an isolated single pipeline. The equilibrium depth and time scale of scour have the largest values at α = 0° and decrease with the increase of the intersecting angle. Finally, the flow structures around the crossing pipelines are presented to explain the scour process." @default.
- W4313406355 created "2023-01-06" @default.
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- W4313406355 date "2022-12-17" @default.
- W4313406355 modified "2023-09-27" @default.
- W4313406355 title "Numerical Investigations on Scour and Flow around Two Crossing Pipelines on a Sandy Seabed" @default.
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- W4313406355 doi "https://doi.org/10.3390/jmse10122019" @default.
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