CUED Publications database

Comparison between empirical formulae of intake vortices

Wang, Y and Jiang, C and Liang, D (2011) Comparison between empirical formulae of intake vortices. Journal of Hydraulic Research, 49. pp. 113-116. ISSN 0022-1686

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Abstract

The hydrodynamic properties of free surface vortices at hydraulic intakes were investigated. Based on the axisymmetric Navier-Stokes equations and empirical assumptions, two sets of formulations for the velocity distributions and the free surface profiles are proposed and validated against measurements available in the literature. Compared with previous formulae, the modifications based on Mih's formula are found to greatly improve the agreement with the experimental data. Physical model tests were also conducted to study the intake vortex of the Xiluodu hydroelectric project in China. The proposed velocity distribution formula was applied to the solid boundary as considered by the method of images. A good agreement was again observed between the prediction and the measurements. © 2011 International Association for Hydro-Environment Engineering and Research.

Item Type: Article
Uncontrolled Keywords: Air-core vortex axial symmetric flow hydraulic intake Navier-Stokes equations vortex
Subjects: UNSPECIFIED
Divisions: Div A > Fluid Mechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:31
Last Modified: 08 Dec 2014 21:45
DOI: 10.1080/00221686.2010.534279