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Numerical Simulation of Wave Forces on Seabed Pipelines

China Ocean Engineering 1998年第2期13卷 203-211页

作者： Li, YC Chen, B Lai, GZ Dalian Univ Technol Dept Civil Engn Dalian 116024 Peoples R China Dalian Univ Technol Dept Engn Mech Dalian 116024 Peoples R China

A three-step finite element method (FEM) together with Large Eddy Simulation (LES) is applied to incompressible turbulent flow around seabed pipelines at relatively high Reynolds numbers. Both two dimensional and three-dimensional numerical simulation is carried out to determine the three-dimensional effect. The results of numerical simulation agree quite well with the wave forces acting on pipeline models measured in physical model test.

关键词： three-step finite element method large eddy simulation seabed pipeline wave force

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Application of CLEAR-VOF method to wave and flow simulations

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Water Science and Engineering 2012年第1期5卷 67-78页

作者： Ying-wei SUN Hai-gui KANG School of Hydraulic Engineering Faculty of Infrastructure EngineeringDalian University of TechnologyDalian 116023P.R.China

A two-dimensional numerical model based on the Navier-Stokes equations and computational Lagrangian-Eulerian advection remap-volume of fluid （CLEAR-VOF） method was developed to simulate wave and flow problems. The Navier-Stokes equations were discretized with a three-step finite element method that has a third-order accuracy. In the CLEAR-VOF method, the VOF function F was calculated in the Lagrangian manner and allowed the complicated free surface to be accurately captured. The propagation of regular waves and solitary waves over a flat bottom, and shoaling and breaking of solitary waves on two different slopes were simulated with this model, and the numerical results agreed with experimental data and theoretical solutions. A benchmark test of dam-collapse flow was also simulated with an unstructured mesh, and the capability of the present model for wave and flow simulations with unstructured meshes, was verified. The results show that the model is effective for numerical simulation of wave and flow problems with both structured and unstructured meshes.

关键词： water wave water flow numerical simulation CLEAR-VOF three-step finite element method

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