IMECH-IR  > 流固耦合系统力学重点实验室
Unsteady characteristics of sediment transport under non-harmonic waves
Li YJ; Zhou JF(周济福)
Source PublicationProcedia Engineering
2015
Volume126Pages:285-289
AbstractSediment transport under waves is one of the key dynamic processes of coastal sediment motion. Previous studies for this issue are mainly based on linear wave theory and quasi-steady simplification. However, waves in real circumstance are always irregular, generally with a certain degree of asymmetry and/or velocity-leaning especially in shallow water. It is envisaged that sediment movement under non-harmonic waves is different from sinusoidal waves. Based on large eddy simulation of turbulent flows in wave boundary layer, a modified method is proposed to calculate sediment transport rate under non-harmonic waves. It is further used to explore the influences of flow acceleration and the phase lead between the free stream velocity and bed shear stress on sediment transport rate in different phases of one wave cycle for forth-leaning. The net transport rate is found to increase with the degree of asymmetry and velocity-leaning index. Both the acceleration and the phase lead have a great influence on average transport rate in each phase.
KeywordForth-leaning Wave Large Eddy Simulation Unsteady Sediment Transport
DOI10.1016/j.proeng.2015.11.243
Indexed ByEI
Language英语
DepartmentLMFS水环境流体力学(LEM)
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58748
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
Li YJ,Zhou JF. Unsteady characteristics of sediment transport under non-harmonic waves[J]. Procedia Engineering,2015,126:285-289.
APA Li YJ,&Zhou JF.(2015).Unsteady characteristics of sediment transport under non-harmonic waves.Procedia Engineering,126,285-289.
MLA Li YJ,et al."Unsteady characteristics of sediment transport under non-harmonic waves".Procedia Engineering 126(2015):285-289.
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