Wave-Current Coupling Effects on the Variation Modes of Pore Pressure Response in a Sandy Seabed: Physical Modeling and Explicit Approximations

doi:10.1029/2022JC019158

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Wave-Current Coupling Effects on the Variation Modes of Pore Pressure Response in a Sandy Seabed: Physical Modeling and Explicit Approximations
	Yang LJ(杨鲤境); Qi WG(漆文刚); Li, Yuzhu ; Gao FP(高福平)
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2023-02-01
卷号	128 期号:2 页码:e2022JC019158
关键词	wave-current coupling effects pore pressure response physical modeling analytical solution sandy seabed
ISSN号	2169-9275
DOI	10.1029/2022JC019158
英文摘要	Previous flume observations on the response of pore pressure in the seabed induced by the combined wave-current were mainly limited to relatively deep-water waves with wavenumber times water depth approximately above 1.0. Meanwhile, existing theoretical solutions neglected the variation of wave height induced by wave-current coupling effects, limiting the accuracy of the predictions. In this study, the combined wave-current induced pore pressure response within a sandy seabed is physically modeled in a water flume. A wide range of wave-current parameters is examined. The effects of wave period, water depth, and wave height with the superimposed following and opposing currents on the change of pore pressure are investigated. The present experiments identify two new particular modes of pore pressure changing under superimposed current on waves, that is, the transition mode and the opposing-current enhancing mode, besides the well-recognized following-current enhancing mode. The specific modes are determined by a dimensionless parameter characterizing the value of wavenumber times water depth for waves in the absence of a current. Based on the conservation of mass, momentum, and energy flux, an explicit solution for the wave height under the wave-current coupling effect is derived. With this updated wave height, an analytical solution for combined wave-current induced pore pressure response is further proposed, which agrees with the measured data. Based on this solution, a general diagram for the current effect on the mudline pore pressure amplitude is proposed, which is applicable for both laboratory and field conditions. Finally, the physical mechanism in three variation modes is discussed.
分类号	一类
WOS研究方向	Oceanography
语种	英语
WOS记录号	WOS:001016933100020
资助机构	National Natural Science Foundation of China [11825205, 11972036] ; Youth Innovation Promotion Association CAS [2021018]
其他责任者	Qi, WG (corresponding author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China. ; Qi, WG (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92607]
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.{Yang, Li-Jing, Qi, Wen-Gang, Gao, Fu-Ping} Chinese Acad Sci, Inst Mech, Beijing, Peoples R China 2.{Yang, Li-Jing, Qi, Wen-Gang, Gao, Fu-Ping} Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China 3.{Li, Yuzhu} Natl Univ Singapore, Dept Civil & Environm Engn, Singapore, Singapore
推荐引用方式 GB/T 7714	Yang LJ,Qi WG,Li, Yuzhu,et al. Wave-Current Coupling Effects on the Variation Modes of Pore Pressure Response in a Sandy Seabed: Physical Modeling and Explicit Approximations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2023,128(2):e2022JC019158.
APA	杨鲤境,漆文刚,Li, Yuzhu,&高福平.(2023).Wave-Current Coupling Effects on the Variation Modes of Pore Pressure Response in a Sandy Seabed: Physical Modeling and Explicit Approximations.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,128(2),e2022JC019158.
MLA	杨鲤境,et al."Wave-Current Coupling Effects on the Variation Modes of Pore Pressure Response in a Sandy Seabed: Physical Modeling and Explicit Approximations".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 128.2(2023):e2022JC019158.