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河底和岸壁水流剪切应力“标准断面”法

罗优 朱森林 曹兵 蒋陈娟

罗优, 朱森林, 曹兵, 蒋陈娟. 河底和岸壁水流剪切应力“标准断面”法[J]. 应用数学和力学, 2021, 42(9): 915-923. doi: 10.21656/1000-0887.420048
引用本文: 罗优, 朱森林, 曹兵, 蒋陈娟. 河底和岸壁水流剪切应力“标准断面”法[J]. 应用数学和力学, 2021, 42(9): 915-923. doi: 10.21656/1000-0887.420048
LUO You, ZHU Senlin, CAO Bing, JIANG Chenjuan. A “Standard Cross-Section” Method for the Calculation of Riverbed and Bank Shear Stresses[J]. Applied Mathematics and Mechanics, 2021, 42(9): 915-923. doi: 10.21656/1000-0887.420048
Citation: LUO You, ZHU Senlin, CAO Bing, JIANG Chenjuan. A “Standard Cross-Section” Method for the Calculation of Riverbed and Bank Shear Stresses[J]. Applied Mathematics and Mechanics, 2021, 42(9): 915-923. doi: 10.21656/1000-0887.420048

河底和岸壁水流剪切应力“标准断面”法

doi: 10.21656/1000-0887.420048
基金项目: 

国家自然科学基金青年科学基金(41806104)

详细信息
    作者简介:

    罗优(1985—), 男, 讲师, 博士(通讯作者. E-mail: luoyou@yzu.edu.cn).

    通讯作者:

    罗优(1985—), 男, 讲师, 博士(通讯作者. E-mail: luoyou@yzu.edu.cn).

  • 中图分类号: O368|TV143

A “Standard Cross-Section” Method for the Calculation of Riverbed and Bank Shear Stresses

  • 摘要: 零剪切应力分割线法和分割线表观剪切应力法是计算河底和河岸水流剪切应力的两种常用方法.为简化分割线表观剪切应力经验表达式,提出了“动量传输平衡偏离”(momentum transferequilibrium deviation,MTED)假设,认为表观剪切应力可由分割线一侧单位时间动量传输与其平衡值的差值来表示.为了确定平衡值,提出了标准断面的概念,所有矩形或者梯形断面都有对应的标准断面.基于MTED假设和标准断面的概念,建立了分割线表观剪切力以及河底和河岸剪切力占总剪切力比重的计算表达式.利用不同实验的200多个数据对不同的计算方法进行了对比分析,结果表明:该文的方法有效改善了计算精度,适用范围广,适用于矩形和梯形断面,以及河岸与河底糙率相同或不同的情况.
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出版历程
  • 收稿日期:  2021-02-22
  • 修回日期:  2021-06-25
  • 网络出版日期:  2021-09-29

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