Two-Dimensional Solution for Straight and Meandering Overbank Flows

Autor:	D. Alan Ervine, K. Babaeyan-Koopaei, R. H. J. Sellin
Rok vydání:	2000
Předmět:	Field (physics) Turbulence Mechanical Engineering Geometry Secondary flow Physics::Fluid Dynamics Overbank Meander Shear stress Boundary value problem Navier–Stokes equations Geology Water Science and Technology Civil and Structural Engineering
Zdroj:	Journal of Hydraulic Engineering. 126:653-669
ISSN:	1943-7900 0733-9429
DOI:	10.1061/(asce)0733-9429(2000)126:9(653)
Popis:	This paper presents a practical method to predict depth-averaged velocity and shear stress for straight and meandering overbank flows. An analytical solution to the depth-integrated turbulent form of the Navier-Stokes equation is presented that includes lateral shear and secondary flows in addition to bed friction. The novelty of the present approach is not only its inclusion of the secondary flows in the formulation but also its applicability to straight and meandering channels. The analytical solution is applied to a number of channels, at model and field scales, and is also compared with other available methods such as that of Shiono and Knight and the lateral distribution method. The present formulation gives much better predictions of velocity and shear stress, particularly in those cases where the secondary flows are dominant.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dd32eea71e2ffb4282a85abcdc60e97a https://doi.org/10.1061/(asce)0733-9429(2000)126:9(653) Zobrazit plný text záznamu Plný text ve formátu PDF