IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : An integrated finite element method model for wave-soil-pipeline interaction
An integrated finite element method model for wave-soil-pipeline interaction
In this study, a monolithically integrated Finite Element Method (FEM) model has been developed for wave-soil-structure
interaction (WSSI). The Reynolds-Averaged Navier-Stokes (RANS) equations are applied to describe wave motion in a fluid
domain, while the seabed domain is described by quasi-state Biot equation. The interface of water and air is tracked by
conservative Level Set method (LSM). The Finite Element Method (FEM) and backward differentiation formula (BDF) are
respectively selected for space discretization and time discretization in this integrated FEM model. In the present model,
only one-way coupling has been considered to integrate fluid model and seabed model. Several available laboratory
experiments are adopted to validate present model. The objective of this paper is to present an integrated FEM model for
the prediction on stability of pipeline subjected to water waves loading and to discuss the dynamic seabed response for
several specific pipeline layouts. The result of validation demonstrates that numerical results have a good agreement with
experimental results and this integrated FEM model can be further extended to practical engineering application. Some
cases on the dynamic seabed response under the pipeline mounted on a flat seabed or inside a trench are investigated for
pipeline stability. The conclusion drawn from this study is that the present WSSI model can accurately capture the
mechanism of wave-induced transient seabed liquefaction around a half or fully buried pipeline.
File Size : 3,209,751 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 21/08/2015
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