| Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models | |
Qi WG(漆文刚)1,2 ; Li CF(李畅飞)1,2; Jeng DS3; Gao FP(高福平)1,2; Liang ZD3
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| Corresponding Author | Gao, Fu-Ping([email protected]) |
| Source Publication | COASTAL ENGINEERING
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| 2019-05-01 | |
| Volume | 147Pages:89-98 |
| ISSN | 0378-3839 |
| Abstract | Waves are coexisting with currents in coastal zones; nevertheless, previous experimental studies for excess pore pressure responses in a porous seabed were predominantly limited to the wave-only condition. In this study, the combined wave-current induced excess pore-pressures in a sandy seabed were experimentally simulated with a specially-designed flume, which can concurrently generate periodic waves and a following/opposing co-directional current. The effect of a current on the wave profile is firstly examined. The wave steepness is decreased by a following current, but enhanced by an opposing current. Flume observations indicate that, under combined wave-current loading, the wave-induced pore-pressure is increased for the following-current case, but reduced for the opposing-current case. Such wave-current combination effect becomes more significant for shorter wave periods. The variation trend of the excess pore-pressure distribution in the present flume observations is consistent with that of the existing analytical solutions. Nevertheless, due to the existence of wave and/or current boundary layer and non-lineartiy of wave-current interactions as indicated by the flume observations, certain deviations exist between the flume results for excess pore-pressure and the analytical solutions, which can not be ignored especially for the opposing-current case. The effects of the boundary layer on the combined wave-current induced pore-pressures in the seabed are further highlighted by supplementary numerical simulations. A favorable prediction by the analytical solution would be expected for following-current cases and smaller pore pressure amplitudes would be obtained for opposing-current cases. |
| Keyword | Excess pore-pressure Flume experiment Sandy seabed Combined waves and current Boundary layer Wave-current interactions |
| DOI | 10.1016/j.coastaleng.2019.02.006 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000463123800008 |
| WOS Keyword | INDUCED SOIL RESPONSE ; TURBULENT CURRENT ; LIQUEFACTION ; BREAKWATER ; STRESSES ; FOUNDATION ; MONOPILE ; BED |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Civil ; Engineering, Ocean |
| Funding Project | National Natural Science Foundation of China[11602273] ; National Natural Science Foundation of China[11825205] ; Strategic Priority Research Program (Type-B) of CAS[XDB22030000] ; Youth Innovation Promotion Association CAS |
| Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program (Type-B) of CAS ; Youth Innovation Promotion Association CAS |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Gao, Fu-Ping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/78720 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Griffith Univ, Sch Engn & Built Environm, Gold Coast Campus, Southport, Qld 4222, Australia |
| Recommended Citation GB/T 7714 | Qi WG,Li CF,Jeng DS,et al. Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models[J]. COASTAL ENGINEERING,2019,147:89-98.Rp_Au:Gao, Fu-Ping |
| APA | 漆文刚,李畅飞,Jeng DS,高福平,&Liang ZD.(2019).Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models.COASTAL ENGINEERING,147,89-98. |
| MLA | 漆文刚,et al."Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models".COASTAL ENGINEERING 147(2019):89-98. |
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| Jp2019138.pdf（1354KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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