|
|
| |
|
|
| 本文已被：浏览 2875次 下载 73次 |
码上扫一扫！ |
|
|
| 单向流作用下沉底物体对水流结构和地形变化的影响 |
|
庞重光1, 韦雁机2, 赵恩宝3
|
|
1.中国科学院海洋研究所;2.国家海洋局第二海洋研究所;3.上海航道勘察设计研究院
|
|
| 摘要: |
|
| 关键词: |
| DOI：201005001 |
| 分类号: |
| 基金项目:科技部2006AA09Z157课题资助 |
|
| A Numerical Study on Flow Patterns and Bedform Evolution Around Obstacles on Seabed |
|
PANG Chongguang1, WEI Yanji2, ZHAO Enbao3
|
|
1.Institute of oceanology,Chinese Academy of Sciences;2.The Second Institute of Oceanography,Stde Oceanic Administration;3.Shanghai Institute of Waterways
|
| Abstract: |
| A one-phase model is established by using CFD(Computational Fluid Dynamics) software,which includes a hydrodynamic sub-model,an erosion-deposition and a moving boundary method.in the model,the velocity field surrounding obstacles on the seabed is computed by a three dimensional k-εturbulence closure sub-model.Erosion and deposition caused by the transportation of suspended load and bed load are also calculated.The evolution of bedform is simulated in a mobile grid technipue.The three-dimensional flow pattems and evolution of bedform around three different obstacles are simulated using the one-phase model.The hydrodynamic process and sediment transportation process surrounding the obstacles are reproduced in detail. The simuated results of bedform evolution are in good agreement with laboratory measurement results in 2005. |
| Key words: |
|
