| Improvement and Application of Grain Size Distribution Characteristics Calculation of Bed Material |
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| 引用本文： | WANG Xianye WANG Xiekang LIU Tonghuan (State Key Lab.of Hydraulics and Mountain River Eng.,Sichuan Univ.,Chengdu 610065,China). Improvement and Application of Grain Size Distribution Characteristics Calculation of Bed Material[J]. 四川大学学报(工程科学版), 2005, 0(Z1) |
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| 作者姓名： | WANG Xianye WANG Xiekang LIU Tonghuan (State Key Lab.of Hydraulics and Mountain River Eng. Sichuan Univ. Chengdu 610065 China) |
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| 作者单位： | State Key Lab.of Hydraulics and Mountain River Eng.，Sichuan Univ.，Chengdu 610065，China |
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| 基金项目： | Supported by National Nature Science Foundation of China(Grant 50409012). |
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| 摘 要： | Grain size distribution of bed material is an important characteristic for studying evolution of natural river channel by means of experimental ways and numerical modeling of flow and sediment process.In this study,the fractal characteristic of sediment particle has been defined by means of fractal theory based on ana- lyzing the property of grain size distribution of bed material in the river channel.Furthennore,the fractal prop- erty of sediment particle has been applied to judge the process of armoring and stabilizing in the armoring ex- periment of bed material.In addition,the relationship between the riverbed roughness and its fractal dimension is also obtained according to the experimental data.Finally,the relationships between bed material roughness, fractal dimension,and representative diameter(d_(50),d_(90))are discussed respectively,the roughness comparison shows that the proposed roughness formula based on fractal theory has higher precision.
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Improvement and Application of Grain Size Distribution Characteristics Calculation of Bed Material |
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| WANG Xianye WANG Xiekang LIU Tonghuan. Improvement and Application of Grain Size Distribution Characteristics Calculation of Bed Material[J]. Journal of Sichuan University (Engineering Science Edition), 2005, 0(Z1) |
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| Authors: | WANG Xianye WANG Xiekang LIU Tonghuan |
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| Abstract: | Grain size distribution of bed material is an important characteristic for studying evolution of natural river channel by means of experimental ways and numerical modeling of flow and sediment process.In this study,the fractal characteristic of sediment particle has been defined by means of fractal theory based on ana- lyzing the property of grain size distribution of bed material in the river channel.Furthennore,the fractal prop- erty of sediment particle has been applied to judge the process of armorin... |
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| Keywords: | grain size distribution bed material sediment particle |
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