海床
比奥数
离散化
有限元法
管道(软件)
地质学
雷诺平均Navier-Stokes方程
液化
海洋岩土工程
波浪荷载
联轴节(管道)
机械
海底管道
计算机科学
岩土工程
计算流体力学
结构工程
工程类
数学
数学分析
物理
机械工程
海洋学
程序设计语言
作者
Zaibin Lin,Yakun Guo,Dong‐Sheng Jeng,Chencong Liao,Nick Rey
标识
DOI:10.1016/j.coastaleng.2015.11.003
摘要
An integrated Finite Element Method (FEM) model is proposed to investigate the dynamic seabed response for several specific pipeline layouts and to simulate the pipeline stability under waves loading. In the present model, the Reynolds-Averaged Navier–Stokes (RANS) equations are used to describe the wave motion in a fluid domain, while the seabed domain is described using Biot's poro-elastic theory. The interface between water and air is tracked by conservative Level Set Method (LSM). The FEM and backward differentiation formula (BDF) are applied for spatial and temporal discretization respectively in the present model. One-way coupling is used to integrate flow and seabed models. The present model is firstly validated using several available laboratory experiments. It is then further extended to practical engineering applications, including the dynamic seabed response for the pipeline mounted on a flat seabed or inside a trench. The results show that the pipeline buried to a certain depth is better protected than that under partially buried in terms of transient liquefaction.
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