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| Two-dimensional numerical simulation of local scour around horizontal cylinder near sand bed |
| Received:August 19, 2011 Revised:December 23, 2011 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20125020 |
| KeyWord:horizontal cylinder local scour dynamic mesh UDF |
| Author | Institution |
| 张芝永 |
中国海洋大学 工程学院, 青岛 |
| 拾兵 |
中国海洋大学 工程学院, 青岛 |
| 范菲菲 |
中国海洋大学 工程学院, 青岛 |
| 阮雪景 |
中国海洋大学 工程学院, 青岛 |
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| Abstract: |
| In order to study the local scour around the horizontal cylinder near sand bed,a 2-d numerical model of local scour based on N-S equations and finite volume method is established through the redevelopment in FLUENT code.Firstly,the flow field around the horizontal cylinder is calculated by using standard k-ε equations,and the bed-load transport rate is computed by the selected empirical formula related to the bed shear stress via UDF (user defined function).Then,the bed profile is simulated by means of dynamic mesh.The model is verified by the physical experiment.The results show that the predictions agree well with the experimental results,which certifies the numerical model's reliability. |
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