Author(s): Shu-Qing Yang; Siow-Yong Lim

Linked Author(s): csqyang, csqyang

Keywords:

Abstract: This paper deals with the boundary shear stress distributions in trapezoidal open channels. The direction of the transport of surplus energy is discussed, which leads to the assumption that the surplus energy within any unit volume of fluid in 3-D flow will be transferred towards the nearest boundary to be dissipated. Based on this concept, the flow cross-sectional area in trapezoidal open channels is divided into various elements according to the shape of cross-section, aspect ratio and roughness distribution. Analytical equations for the local and mean boundary shear stress along the wetted perimeter are presented. The formulae and the experimental data available in literature are in good agreement.

DOI: https://doi.org/10.1080/00221680509500114

Year: 2005