| 无粘性泥沙的起动条件 |
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| 引用本文： | 褚君达.无粘性泥沙的起动条件[J].水科学进展,1993,4(1):37-43. |
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| 作者姓名： | 褚君达 |
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| 作者单位： | 河海大学环境水利研究所 南京 210024 |
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| 摘 要： | 对H. A. 爱因斯坦等国内外数10种不同形式和结构的泥沙起动条件进行分析研究,统一转化为无因次起动切力θc=τc/(γs-γ)d的形式,并分析计算出无粘性均匀沙的θc值。一般来讲,θc是界于0.0231～0.0716之间的一个常数值。从分析结果可看出各种公式之间的差别,为使用选择公式提供了科学的依据。
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| 关 键 词： | 起动条件 无粘性泥沙 无因次切力 |
| 收稿时间： | 1992-03-02 |
Conditions of Incipient Motion of Non-cohesive Sediments |
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| Chu Junda.Conditions of Incipient Motion of Non-cohesive Sediments[J].Advances in Water Science,1993,4(1):37-43. |
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| Authors: | Chu Junda |
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| Institution: | Hohai University, Nanjing, 210024 |
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| Abstract: | Some dozens of conditions of incipient motion of sediment proposed by various investigators are transformed into a unified form in terms of dimensionless critical shear stress(or tractive stress) θc=τc/(γs-γ)d.The values of θc for non-cohesive sedinvents with uniform diameters are calculated,which generally lie between 0.0231 and 0.0716.The differences of various equations can be distinguished from the results calculated.Thus,a scientific basis can be provided for selecting and using the equations. |
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| Keywords: | condition of incipient motion non-cohesive sediment dimensionless critical shear stress |
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