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常曲率大深宽比河湾拟序扰动结构与床面响应关系探讨

高术仙 徐海珏 白玉川

高术仙, 徐海珏, 白玉川. 常曲率大深宽比河湾拟序扰动结构与床面响应关系探讨[J]. 应用数学和力学, 2016, 37(10): 1100-1117. doi: 10.21656/1000-0887.370094
引用本文: 高术仙, 徐海珏, 白玉川. 常曲率大深宽比河湾拟序扰动结构与床面响应关系探讨[J]. 应用数学和力学, 2016, 37(10): 1100-1117. doi: 10.21656/1000-0887.370094
GAO Shu-xian, XU Hai-jue, BAI Yu-chuan. Coherent Disturbance Structures and Bed Topography Responses in Large Depth-to-Width Ratio River Bends With Constant Curvatures[J]. Applied Mathematics and Mechanics, 2016, 37(10): 1100-1117. doi: 10.21656/1000-0887.370094
Citation: GAO Shu-xian, XU Hai-jue, BAI Yu-chuan. Coherent Disturbance Structures and Bed Topography Responses in Large Depth-to-Width Ratio River Bends With Constant Curvatures[J]. Applied Mathematics and Mechanics, 2016, 37(10): 1100-1117. doi: 10.21656/1000-0887.370094

常曲率大深宽比河湾拟序扰动结构与床面响应关系探讨

doi: 10.21656/1000-0887.370094
基金项目: 国家自然科学基金(51279124;51021004;50979066)
详细信息
    作者简介:

    高术仙(1987—),女,博士生(E-mail: gaoshuxianqixi@126.com);白玉川(1967—),男,教授,博士(通讯作者. E-mail: ychbai@tju.edu.cn).

  • 中图分类号: O158

Coherent Disturbance Structures and Bed Topography Responses in Large Depth-to-Width Ratio River Bends With Constant Curvatures

Funds: The National Natural Science Foundation of China(51279124;51021004;50979066)
  • 摘要: 蜿蜒河流床面形态既是其复杂动力结构响应的结果,同时也是决定河流进一步演化方向的重要因素.以蜿蜒河流中一种典型的大深宽比河湾为背景,探索其动力结构与床面响应的关系,将黏性不可压缩流体方程、泥沙输移方程和床面变形方程耦合,通过摄动方法求解床面响应,分析床面形态变化特性.研究成果显示在水流二维扰动作用下,河道中浅滩深槽呈现规则响应.当弯曲度等于0时,床面响应形态围绕河道中轴线基本呈反对称分布;当弯曲度不等于0时,床面响应形态呈不对称分布,中轴线向凹岸偏移.该文给出了由Reynolds(雷诺)数、扰动波数、床面形态增减率等构成的床面响应发展趋势稳定关系的判别方法.
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出版历程
  • 收稿日期:  2016-04-01
  • 修回日期:  2016-09-13
  • 刊出日期:  2016-10-15

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