Investigation of air-core vortex at hydraulic intakes

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• 作者：Ying-kui Wang ; Chun-bo Jiang ; Dong-fang Liang
• 关键词：Air-core vortex ; hydraulic intake ; axisymmetric flow ; PTV
• 刊名：Journal of Hydrodynamics, Ser. B
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：22
• 期：5, Supplement 1
• 页码：696-701
• 全文大小：434 K

文摘

Hydrodynamic properties of the surface vortex have been investigated. Based on the Navier-Stokes equations, three sets of the new formulations for the tangential velocity distributions are derived, and verified against the experimental measurements in the literature. It is shown that one modification greatly improves the agreement with the experimental data. Physical model experiments were carried out to study the intake vortex related to the Xiluodu hydropower project. The velocity fields were measured using the Particle Tracking Velocimetry (PTV) technique. The proposed equation for tangential velocity distribution is applied to the Xiluodu project with the solid boundary being considered by the method of images. Good agreement has been observed between the formula prediction and the experimental observation.