A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction
文献类型：期刊论文
| 作者 | Zhou, Mo-Zhen4; Qi WG(漆文刚)2,3 ; Jeng, Dong-Sheng1; Gao FP(高福平)2,3
|
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 239页码:16 |
| 关键词 | Nonlinear complementarity problem Karush-Kuhn-Tucker (KKT) condition Penalty method Non-Darcy flow model Seabed liquefaction Wave-seabed interactions |
| ISSN号 | 0029-8018 |
| DOI | 10.1016/j.oceaneng.2021.109807 |
| 通讯作者 | Qi, Wen-Gang(qiwengang@imech.ac.cn) |
| 英文摘要 | Prediction of wave-induced instantaneous (oscillatory or momentary) liquefaction is particularly important for the design of offshore foundations. Most previous studies applied the linear Darcy model to characterize the porous flow in a seabed. This treatment was found to cause fallacious tensile stresses in a non-cohesive seabed. In this study, to overcome such shortcomings of previous models, a non-Darcy flow model is proposed based on a Karush-Kuhn-Tucker (KKT) condition. In the KKT condition, the primal constraint arises from the fact that the tensile behavior does not exist in a non-cohesive seabed, while the dual condition arises from the physical evidences that the pore-fluid velocity increases during liquefaction. The non-linearity of the present model is handled by the Newton-Raphson method within the standard finite element framework, without coding constrained variational principle. This highlights the convenience for numerical implementation. The difficulties in treating the nonlinearity by previous dynamic permeability model are also eliminated by the non Darcy flow model. The merits of the proposed model are validated by examining four numerical treatments and two liquefaction criteria. The liquefaction depth by the present model is found to be roughly 0.73 times of the value by the linear Darcy model. |
| 分类号 | 一类 |
| WOS关键词 | INDUCED PORE PRESSURE ; INDUCED SOIL RESPONSE ; FACED ROCKFILL DAM ; NUMERICAL-MODEL ; MOMENTARY LIQUEFACTION ; BURIED PIPELINE ; NONLINEAR-WAVE ; POROUS-MEDIA ; SAND ; PERMEABILITY |
| 资助项目 | Fundamental Research Funds for the Central Universities, China[2021JBM034] ; National Natural Science Foundation of China[11825205] ; National Natural Science Foundation of China[51808034] ; National Natural Science Foundation of China[11972036] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000697004400004 |
| 资助机构 | Fundamental Research Funds for the Central Universities, China ; National Natural Science Foundation of China |
| 其他责任者 | Qi, Wen-Gang |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/87423]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Griffith Univ, Sch Engn & Built Environm, Gold Coast Campus, Gold Coast, Qld 4222, Australia 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 4.Beijing Jiaotong Univ, Key Lab Urban Underground Engn, Minist Educ, Beijing 100044, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhou, Mo-Zhen,Qi WG,Jeng, Dong-Sheng,et al. A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction[J]. OCEAN ENGINEERING,2021,239:16. |
| APA | Zhou, Mo-Zhen,漆文刚,Jeng, Dong-Sheng,&高福平.(2021).A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction.OCEAN ENGINEERING,239,16. |
| MLA | Zhou, Mo-Zhen,et al."A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction".OCEAN ENGINEERING 239(2021):16. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。