Numerical analysis on random wave-induced porous seabed response
Numerical analysis on random wave-induced porous seabed response
复制标题
随机波引起的多孔海底响应的数值分析
DOI：
10.1080/1064119x.2017.1407976
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发表时间：
2017-12
影响因子：
2.2
通讯作者：
Jian-Hua Wang
中科院分区：
文献类型：
--
作者：
Xiang-Lian Zhou;Jun Zhang;Hao-Jie Lv;Jin-Jian Chen;Jian-Hua Wang
摘要：在海洋结构设计中，随机波对海洋结构的响应研究受到了众多研究人员和工程人员的高度重视。以前的大多数研究都局限于规则波。本文基于Longuet-Higgins随机波理论和有限元法，建立了随机波诱发海床响应的数值模型。将海床视为多孔弹性介质，采用Biot部分动力方程（u-p模型）对其进行表征。Longuet-Higgins模型采用JONSWAP光谱，该模型基于线性衍射溶液的累积叠加。在此基础上，通过与相应的Stokes波和余弦波进行比较，研究了随机波对海底响应的影响。然后，进行了参数化研究，考察了波浪和土壤特性对海床的影响。
ABSTRACT Research on the response of random wave on offshore structures has received great deal of attention of many researchers and engineers in the design of marine structures. Most previous investigations have been limited to the regular waves. In this paper, based on Longuet–Higgins random wave theory and finite element method, a numerical model for random wave-induced seabed response is established. The seabed is treated as poroelastic medium and characterized by Biot’s partly dynamic equations (u–p model). The JONSWAP spectrum is adopted in Longuet–Higgins model, which is based on the cumulative superposition of linear diffraction solution. Based on the numerical results, the effects of random wave on seabed response are investigated by comparing with the corresponding Stokes wave and cnoidal wave. Then, a parametric study is conducted to examine the effect of wave and soil characteristic on the seabed.
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