| 沙纹床面上波流共同作用的数值模拟 |
| |
| 引用本文： | 蒋昌波,白玉川,赵子丹,张红武. 沙纹床面上波流共同作用的数值模拟[J]. 水利学报, 2005, 36(1): 0062-0068 |
| |
| 作者姓名： | 蒋昌波 白玉川 赵子丹 张红武 |
| |
| 作者单位： | 长沙理工大学河海工程学院,湖南长沙,410076;清华大学水利水电工程系,北京,100084;天津大学建筑工程学院,天津,300072;清华大学水利水电工程系,北京,100084 |
| |
| 基金项目： | 国家自然科学基金项目(10202003，50479015)，国家杰出青年科学基金项目(50125924) |
| |
| 摘 要： | 海滨地区广泛存在涡动沙纹，它很大程度上决定着波浪衰减和泥沙运动。本文建立了描述波浪、水流共同作用下底层流动特性的立面二维数值模型。模型成功模拟了波浪、水流共同作用下底层分离涡随时间、空间变化的动力特性，文中还进一步对波浪、水流不同对比情况下的涡动力特性及分离涡尺度和紊动特性进行了讨论。
|
| 关 键 词： | 波流边界层 涡动沙纹 数学模型 |
| 文章编号： | 0559-9350(2005)01-0062-07 |
| 修稿时间： | 2003-09-28 |
Numerical simulation for joint action of wave and current on rippled sea bed |
| |
| JIANG Chang-bo,BAI Yu-chuan,ZHAO Zi-dan,ZHANG Hong-wu. Numerical simulation for joint action of wave and current on rippled sea bed[J]. Journal of Hydraulic Engineering, 2005, 36(1): 0062-0068 |
| |
| Authors: | JIANG Chang-bo BAI Yu-chuan ZHAO Zi-dan ZHANG Hong-wu |
| |
| Affiliation: | 1.Changsha University of Science & Technology, Changsha 410076, China; 2.Tsinghua University, Beijing 100084, China; 3.Tianjin University, Tianjin 300072, China |
| |
| Abstract: | Vortex ripples widely exist in coastal area and greatly control the attenuation of wave and movement of sediment. The flow structure around the vortex ripples can be modeled as a 2-D flow due to the geometry of the flow boundary. In this paper, a 2-D large-eddy-simulation method (LES) was used to predict the flow structure and the dynamic characteristics of vortex in the sea bed under the joint action of wave and current. The result gives the whole process of the formation, evolvement and disappearance of vortex. Furthermore, the dynamic characteristics of vortex, its scale and turbulent characteristics of separated vortex under different combinations of wave and current were investigated. |
| |
| Keywords: | wave current boundary layer vortex ripple numerical model large-eddy-simulation (LES) method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《水利学报》浏览原始摘要信息 |
|
点击此处可从《水利学报》下载全文 |
|
