Unsteady characteristics of sediment transport under non-harmonic waves
文献类型：期刊论文
| 作者 | Li YJ; Zhou JF(周济福)
|
| 刊名 | Procedia Engineering
 |
| 出版日期 | 2015 |
| 卷号 | 126页码:285-289 |
| 关键词 | forth-leaning wave large eddy simulation unsteady sediment transport |
| 中文摘要 | Sediment 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. |
| 收录类别 | EI |
| 语种 | 英语 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/58748]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 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. |
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。