三角洲初始段射流边界层相似解求解

白玉川; 辛玮琰; 徐海珏

doi:10.21656/1000-0887.400364

三角洲初始段射流边界层相似解求解

doi: 10.21656/1000-0887.400364

¹天津大学水利工程仿真与安全国家重点实验室, 天津 30072;²天津大学河流海岸工程泥沙研究所, 天津 30072

基金项目: 国家自然科学基金（51879182）；江西省水利厅科技项目（2018GKF-0368）

详细信息

作者简介:
白玉川（1967—），男，教授，博士，博士生导师(E-mail: ychbai@tju.edu.cn);徐海珏（1977—），女，副教授，博士，硕士生导师（通讯作者. E-mail: xiaoxiaoxu_2004@163.com）.

中图分类号: O303
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出版历程
- 收稿日期: 2019-11-29
- 修回日期: 2020-02-20
- 刊出日期: 2020-09-01

Similarity Solution of Jet Boundary Layer for the Initial Segment of a Delta

¹State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University, Tianjin 300072, P.R.China;²Institute for Sediment on River and Coast Engineering, Tianjin University, Tianjin 300072, P.R.China

Funds: The National Natural Science Foundation of China（51879182）

摘要

摘要: 三角洲初始段形成过程中，水流携带泥沙运动至湖区，主要依靠出射的初始动量来维持自身的继续运动.该文根据这一过程的运动特点，依据浑水浅水方程，建立了三角洲初始段平面射流边界层理论模式，采用相似解解法，得到了三角洲形成初期的流场分布.利用河床演变通用数学模型推导得到了表征入湖三角洲初始段形态特征的理论表达式，对三角洲初始段冲淤形态做了定量分析.通过实验验证，理论解能够较好地表达三角洲形成初期的冲淤趋势和形态特征.
- 三角洲 /
- 射流边界层 /
- 初始段 /
- 冲淤 /
- 相似解
Abstract: Sediment is carried by flow to the lake area during the formation process of the initial segment of a delta, which mainly depends on the initial momentum to maintain its own continuous movement. According to the characteristics of this process, the theoretical model for the plane jet boundary layer in the initial segment of the delta was established based on the shallow water equations for muddy water, and the flow field distribution of the initial segment of delta formation was obtained with the similarity solution method. Based on the general mathematical model of river bed evolution, the theoretical expression of the morphological characteristics of the initial segment was derived, and the erosion and deposition of the initial segment were quantitatively analyzed. Through the experimental verification, the theoretical solution can well describe the erosion and deposition trend and morphological characteristics in the early stage of delta formation.
- delta /
- jet boundary layer /
- initial segment /
- erosion and deposition /
- similarity solution

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参考文献(30)

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