Analytical solutions for transverse distributions of stream-wise velocity in turbulent flow in rectangular channel with partial vegetation

被引：0
|
作者：
槐文信 [1 ]
耿川 [1 ]
曾玉红 [1 ]
杨中华 [1 ]
机构：
[1] State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University
来源：
Applied Mathematics and Mechanics(English Edition) | 2011年 / 32卷 / 04期
基金：
中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;
关键词：
theory of poroelasticity; open channel flow; vegetation; secondary current; depth-averaged velocity distribution;
D O I：
暂无
中图分类号：
TV131.2 [水动力学];
学科分类号：
0801 ; 080103 ; 080104 ; 081502 ;
摘要：
The theory of poroelasticity is introduced to study the hydraulic properties of the steady uniform turbulent flow in a partially vegetated rectangular channel.Plants are assumed as immovable media.The resistance caused by vegetation is expressed by the theory of poroelasticity.Considering the influence of a secondary flow,the momentum equation can be simplified.The momentum equation is nondimensionalized to obtain a smooth solution for the lateral distribution of the longitudinal velocity.To verify the model,an acoustic Doppler velocimeter(ADV) is used to measure the velocity field in a rectangular open channel partially with emergent artificial rigid vegetation.Comparisons between the measured data and the computed results show that the method can predict the transverse distributions of stream-wise velocities in turbulent flows in a rectangular channel with partial vegetation.
引用
收藏
页码：459 / 468
页数：10
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