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J. Mar. Sci. Eng. 2018, 6(3), 83;

Wave (Current)-Induced Pore Pressure in Offshore Deposits: A Coupled Finite Element Model

State Key Laboratory of Ocean Engineering, Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Griffith School of Engineering, Griffith University Gold Coast Campus, Queensland, QLD 4222, Australia
School of Engineering, University of Aberdeen, Aberdeen AB24 3UE, UK
School of Engineering, University of Bradford, Bradford BD7 1DP, UK
Author to whom correspondence should be addressed.
Received: 10 May 2018 / Revised: 7 June 2018 / Accepted: 3 July 2018 / Published: 6 July 2018
(This article belongs to the Special Issue Coastal Geohazard and Offshore Geotechnics)
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The interaction between wave and offshore deposits is of great importance for the foundation design of marine installations. However, most previous investigations have been limited to connecting separated wave and seabed sub-models with an individual interface program that transfers loads from the wave model to the seabed model. This research presents a two-dimensional coupled approach to study both wave and seabed processes simultaneously in the same FEM (finite element method) program (COMSOL Multiphysics). In the present model, the progressive wave is generated using a momentum source maker combined with a steady current, while the seabed response is applied with the poro-elastoplastic theory. The information between the flow domain and soil deposits is strongly shared, leading to a comprehensive investigation of wave-seabed interaction. Several cases have been simulated to test the wave generation capability and to validate the soil model. The numerical results present fairly good predictions of wave generation and pore pressure within the seabed, indicating that the present coupled model is a sufficient numerical tool for estimation of wave-induced pore pressure. View Full-Text
Keywords: wave motion; offshore deposits; seabed response; FEM; pore pressure wave motion; offshore deposits; seabed response; FEM; pore pressure

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Liao, C.; Jeng, D.; Lin, Z.; Guo, Y.; Zhang, Q. Wave (Current)-Induced Pore Pressure in Offshore Deposits: A Coupled Finite Element Model. J. Mar. Sci. Eng. 2018, 6, 83.

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