Variable and conflicting shear stress estimates inside a boundary layer with sediment transport

详细信息    查看全文

• 作者：Zoë ; S. Lee and Andreas C. W. Baas
• 关键词：shear stress ; sediment transport ; Law-of-the-Wall ; Reynolds decomposition ; ultrasonic anemometry
• 刊名：Earth Surface Processes and Landforms
• 出版年：2016
• 出版时间：30 March 2016
• 年：2016
• 卷：41
• 期：4
• 页码：435-445
• 全文大小：3973K
• ISSN：1096-9837

文摘

This paper presents a comparison between two methods for estimating shear stress in an atmospheric internal boundary layer over a beach surface under optimum conditions, using wind velocities measured synchronously at 13 heights over a 1.7 m vertical array using ultrasonic anemometry. The Reynolds decomposition technique determines at-a-point shear stresses at each measurement height, while the Law-of-the-Wall yields a single boundary layer estimate based on fitting a logarithmic velocity profile through the array data.