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Formation process of meandering channel by a 2D numerical simulation
  • ISSN号:1001-6279
  • 期刊名称:International Journal of Sediment Research
  • 时间:0
  • 页码:306-322
  • 分类:TV142[水利工程—水力学及河流动力学] TQ560.1[化学工程—炸药化工]
  • 作者机构:[1]Ph.D. Candidate, degree, State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing100084, China, [2]Prof., Dr., State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China, [3]Prof., Dr., State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, [4]Ph.D, Post-doctoral research fellow, Chinese Research Academy of Environmental Sciences, Beijing 10001 , China
  • 相关基金:Financial support from China’s National Natural Science Foundation(No.50979043,51039004);Open Research Fund Program of State key Laboratory of Hydroscience and Engineering(No: sklhse-2011-B-02)
  • 相关项目:复杂边界下急弯流动次生流复合结构及输运现象研究
作者: 王虹|
中文摘要:

A 2D 为水动力学,沉积运输和河的平均深度的模型词法调整被介绍。沉积运输 submodel 考虑不一致的沉积,床表面 armoring,水流带来的碎石运输的方向上的第二等的流动的影响,和河床的横向的斜坡。河岸侵蚀 submodel 为在 degradational 或沉积的床进化期间更新河岸几何学合并一个简单模拟方法。模型被用于 180 灲祬椠据敲獡摥戠 ?? ‰楴敭 ? 湡 ? 桴 ? 敭楤湡搠慩敭整 ? 景戠摥氠慯? 湩牣慥敳 ?祢㈠木‰楴敭 s

英文摘要:

A 2D depth-averaged model for hydrodynamic, sediment transport and river morphological adjustment is presented. The sediment transport submodel considers non-uniform sediment, bed surface armoring, impact of secondary flow on the direction of bed-load transport, and transverse slope of river bed. The bank erosion submodel incorporates a simple simulation method for updating bank geometry during either degradational or aggradational bed evolution. The model is applied to a 180~ bend with a constant radius under unsteady flow conditions, and to Friedkin's laboratory meander channels. The results are in acceptable agreement with measurements, confirming the two dimensional model's potential in predicting the formation of river meandering and improving understanding of patterning processes. Future researches are needed to clarify some simplifications and limitations of the model.

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期刊信息
  • 《国际泥沙研究:英文版》
  • 主管单位:
  • 主办单位:国际泥沙研究培训中心
  • 主编:王兆印
  • 地址:北京车公庄两路20号泥沙中心
  • 邮编:100048
  • 邮箱:chyh@iwhr.com
  • 电话:010-68786579
  • 国际标准刊号:ISSN:1001-6279
  • 国内统一刊号:ISSN:11-2699/P
  • 邮发代号:
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  • 被引量:184