MEASUREMENT OF BED SHEAR STRESS UNDER WAVES

Proceedings of the International Conference on Coastal Engineering

H.P. Riedel¹  J.W. Kamphuis¹  A. Brebner¹ 

[1] Coastal Engineering Research Laboratory, Queen's University at Kingston

关键词: shear stress;    bed stress;    stress measurement;   

DOI  :  10.9753/icce.v13.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

Shear stress measurements on both smooth and sand roughened beds were carried out in an oscillating water tunnel using a flexurally supported shear plate. The range of simulated wave boundary layers covered practically any situation possible in the field or laboratory. In the laminar range good agreement is obtained with the theoretical shear stress calculated from first order wave theory. However, in the turbulent flow regimes the experimental data indicates that theory results in an overestimate of the shear force by 20-50%. Limits of laminar, smooth turbulent and rough turbulent flow regimes are determined and it appears that the rough turbulent flow regime may itself be subdivided into two sections, each having different turbulence characteristics.

【 授权许可】

Unknown