Flow structure and turbulence in partly-vegetated open channel

摘要：

　　The flow structure in the partly-vegetated open channel under submergence condition was investigated.The observations show that, near the lateral edge of vegetation canopy, the vertical profile is deflected at the near-bed region, coincident with the negative y,-component Reynolds stress.The velocity deflection is attributed to the vertical behavior of formed horizontal coherent vortices which are significantly suppressed by the bed resistance at the near-bed region, confirmed by small y-component Reynolds stress at the near-bed region compared to the upper vegetation layer.Further, a simplified model of turbulence structure is proposed to further interpret the flow/vegetation interaction.

关键词： vegetation canopy flow deflection coherent vortices

作者: Xufeng Yan Huanfeng Duan Winghong Onyx Wai Xiekang Wang

作者单位: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, China;Departm Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, China

会议类型: 国际会议

会议名称: The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)

会议地点: 江苏 无锡

会议语种:英文

页码: 1008-1013

在线出版日期: 2016-11-11（万方平台首次上网日期，不代表论文的发表时间）