| 丁坝坝头冲淤的三维数值模拟 |
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| 引用本文： | 彭静,玉井信行,河原能久.丁坝坝头冲淤的三维数值模拟[J].泥沙研究,2002,36(1):25-29. |
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| 作者姓名： | 彭静 玉井信行 河原能久 |
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| 作者单位： | 1. 中国水利水电科学研究院水环境所,北京,100038
2. 日本东京大学土木系 |
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| 摘 要： | 本文对洪水条件丁坝近体的局部冲淤进行了三维数值模拟。开发了与全三维紊流模型连接计算的泥沙模型。泥沙推移质的计算考虑了床面坡度对推移质输沙率和临界启动剪切力的综合影响。模型经丁坝淹没绕流实验的充分验证。结果详尽讨论了局部冲刷随时间的动态变化过程和动平衡下的河床平面形态特征。
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| 关 键 词： | 局部冲淤 紊流 三维模型 丁坝 |
| 文章编号： | 0468-155X(2002)01-0025-05 |
| 修稿时间： | 2001年9月19日 |
Numerical Modeling of Local Scour around Spur Dikes |
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| PENG Jing ,Nobuyuki Tamai ,Yoshihisa Kawahara.Numerical Modeling of Local Scour around Spur Dikes[J].Journal of Sediment Research,2002,36(1):25-29. |
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| Authors: | PENG Jing Nobuyuki Tamai Yoshihisa Kawahara |
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| Affiliation: | PENG Jing 1,Nobuyuki Tamai 2,Yoshihisa Kawahara 2 |
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| Abstract: | Local scour and deposition around submerged spur dike was numerically simulated in the present paper. A sediment transport model of bed load that interacts with 3D turbulent flow was developed. Computation of the bed load transport considered the influences of bed slope on both critical bed shear stress and bed load transport rate. The developed model was applied to a spur dike flow over movable bed. The predicted scour hole profiles agreed reasonably well with the measured. The results clarified transient characteristics of local scour with time and the bed topography at equilibrium state. |
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| Keywords: | local scour trubulence three\|dimensional model spur dike |
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