| NUMERICAL MODELING OF SUSPENDED SEDIMENT TRANSPORT IN CHANNEL BENDS |
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| 作者姓名： | HUANG Sui-liang JIAY．F WANG Sam S. Y. |
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| 作者单位： | National Center |
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| 基金项目： | 国家自然科学基金;天津市自然科学基金 |
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| 摘 要： | 1. INTRODUCTION Due to the fact that three-dimensional (3D) numerical models are quite expensive to simulate flow and sediment transport processes, vertically-integrated two-dimensional (2D) models are extensively applied at present, even to the predictio…
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| 关 键 词： | 运算法则 色散 弯曲 悬浮沉积物运输 2D数字模型 流体力学 水流动力学 |
| 收稿时间： | 2005-01-12 |
NUMERICAL MODELING OF SUSPENDED SEDIMENT TRANSPORT IN CHANNEL BENDS |
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| HUANG Sui-liang,JIA Y. F,WANG Sam S. Y.NUMERICAL MODELING OF SUSPENDED SEDIMENT TRANSPORT IN CHANNEL BENDS[J].Journal of Hydrodynamics,2006,18(4):411-417. |
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| Authors: | HUANG Sui-liang JIA Y F WANG Sam S Y |
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| Affiliation: | 1. College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;2. National Center for Computational Hydroscience and Engineering, The University of Mississippi, Oxford, USA;1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;2. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China;1. Department of Agricultural and Biological Engineering, Purdue University, 225 South University Street, West Lafayette, IN 47907, USA;2. USDA-Agricultural Research Service, National Soil Erosion Research Laboratory, West Lafayette, IN 47907, USA |
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| Abstract: | An algorithm to compute three-dimensional sediment transport effect was proposed in this paper to enhance the capability of depth-averaged numerical models. This algorithm took into account of non-uniform distributions of flow velocities and suspended sediment concentrations along water depth, it significantly enhanced the applicability of 2D models in simulating open channel flows, especially in channel bends. Preliminary numerical experiments in a U-shaped and a sine-generated experimental channel indicate that the proposed method performs quite well in predicting the change of bed-deformation in channel bends due to suspended sediment transport. This method provides an effective alternative for the simulations of channel morphodynamic changes. |
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| Keywords: | algorithm dispersion terms bends suspended sediment transport 2D numerical model |
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