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Numerical investigation of hydrodynamic characteristics and local scour mechanism around submarine pipelines under joint effect of solitary waves and currents
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In this paper, the joint effect of solitary waves and background currents on the pipelines is numerically studied by using a numerical wave tank developed with a free surface tracking approach and the immersed boundary method.About:
This article is published in Ocean Engineering.The article was published on 2021-02-15. It has received 30 citations till now. The article focuses on the topics: Submarine pipeline & Pipeline transport.read more
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<scp>Multiple‐GPU</scp> parallelization of three‐dimensional material point method based on single‐root complex
TL;DR: In this article , a multiple-GPU parallel strategy is developed based on a single-root complex architecture of the computer purely within a CUDA environment, where peer-to-peer (P2P) communication between the GPUs is performed to exchange the information of the crossing particles and ghost element nodes, which is faster than the heavy send/receive operations between different computers through the infiniBand network.
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Approach for evaluating instantaneous impact forces during submarine slide-pipeline interaction considering the inertial action
TL;DR: In this paper , a series of numerical simulations on the submarine slide-pipeline interaction at Reynolds numbers ranging from 0.36 to 287 via a computational fluid dynamics (CFD) method is presented.
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Effect of pipeline surface roughness on peak impact forces caused by hydrodynamic submarine mudflow
TL;DR: In this article , the effect of pipeline surface roughness on impact forces on suspended and laid-on-seabed pipelines caused by mudflows is quantified. And a standard chart methodology considering pipeline roughness to estimate peak impact forces is established, which provides a basis for the risk assessment of the whole life cycle of submarine pipelines.
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Bridge pier geometry effects on local scour potential: A comparative study
TL;DR: In this article, the authors used computational fluid dynamic (CFD) simulations to understand the performance of different flow countermeasures in reducing the scour potential, which can mitigate the horseshoe vortices and downflow issues.
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Numerical study on hydrodynamic load and vibration of pipeline exerted by submarine debris flow
TL;DR: In this paper, a numerical tank is established using the Immersed boundary (IB) method, in which the three-phase media (air, water and debris flow) are embedded.
References
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Solution of the implicitly discretised reacting flow equations by operator-splitting
TL;DR: In this article, a non-iterative method for handling the coupling of the implicitly discretised time-dependent fluid flow equations is described, based on the use of pressure and velocity as dependent variables and is hence applicable to both the compressible and incompressible versions of the transport equations.
Journal ArticleDOI
Sediment transport; Part I, Bed load transport
TL;DR: In this article, a method is presented which enables the computation of the bed-load transport as the product of the saltation height, the particle velocity and the bed load concentration.
Book
Dynamics of marine sands
TL;DR: Dynamics of marine sands' specifically deals with coastal and offshore sea areas, as well as rivers and estuaries, for sand and gravel sediments as mentioned in this paper, presented a convenient and useable introduction to sediment processes in a form that is accessible to a wide readership.
Journal ArticleDOI
Calculation of incompressible rough-wall boundary-layer flows
Tuncer Cebeci,K. C. Chang +1 more
TL;DR: The algebraic eddy viscosity model of Cebeci and Smith has been modified to account for wall roughness by incorporating a suggestion of Rotta as discussed by the authors, and the boundary-layer equations are solved, with this model, by the accurate and efficient Keller Box scheme for a wide variety of experimental configurations.
Journal ArticleDOI
Breaching in fine sands and the generation of sustained turbidity currents in submarine canyons
TL;DR: In this paper, an analytical model of the breaching process in fine sand is incorporated in a one-dimensional, steady-state numerical model of turbidity currents describing the spatial development of flow.