弯曲复式河道水流特性数值模拟研究  

Numerical simulation of flow characteristics in compound meandering channel

作　　者：程凯 沈锐燕 唐勇 周晓泉[1] CHEN Kai;SHEN Ruiyan;TANG Yong;ZHOU Xiaoquan(State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China;Guangdong Renxin Construction Consulting Ltd.,Co.Foshan 528000,China;Leshan Shawan District Water Authority,Leshan 614900,China)

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 [2]广东人信工程咨询有限公司,广东佛山528000 [3]乐山市沙湾区水务局,四川乐山614900

出　　处：《人民长江》2018年第7期96-101,共6页Yangtze River

基　　金：国家自然科学基金资助项目(51539007);国家重点研发计划资助项目(2016YFC0402302)

摘　　要：为了解二维、三维模型在弯曲复式河道水流数值模拟中的应用情况,利用物理模型试验数据验证二维模型的计算结果,并对断面水面线进行了分析。可以看出,二维数模不适用于弯道水流的局部模拟,而适用于宏观水流流动的模拟。采用三维模型分析了弯曲复式河道中的二次流现象,结果表明,三维数模对于弯道水流的二次流、垂线流速分布模拟效果比较理想,可以得到弯曲河道水流运动的基本规律。Two-dimensional and three-dimensional models are applied to study the numerical simulation of compound meandering channels.Based on the physical modeling experiment,the calculation results of two dimensional models are verified,and the water surface of cross section is studied.The results indicate that two-dimensional numerical model is not suitable for simulation of meandering channels,but applicable to simulating macro flow.Three-dimensional model is qualified to analyze the secondary flow in compound meandering channels,and it is also ideal in simulating secondary flow and vertical velocity distribution.

关 键 词：二维模型 三维模型 弯曲复式河道 二次流 数值模拟 

分 类 号：TV142[水利工程—水力学及河流动力学]