IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Numerical Simulation of Hydraulic Characteristics of Spillway Tunnel in the Radial Gate Closing Proc...
Numerical Simulation of Hydraulic Characteristics of Spillway Tunnel in the Radial Gate Closing Process
Author : MA Xudong, YANG Qing, DAI Guangqing and XU Jie
Based on RNG ?-e model, VOF model and dynamic mesh model, the hydraulic characteristics of the Ogee curve section of spillway tunnel are simulated successfully in upstream radial gate closing process with sudden lateral enlargement and vertical drop aerator at middle chamber outlet. It is concluded that the aerator could form steady and through cavity to guarantee adequately entrainment to prevent cavitation erosion damage. With the decreasing of gate opening and increasing of Froude number, the variation law of bottom cavity length and lateral cavity length are accordance with liner increase rule in general. In addition, there is greater pressure peak at the range of lashing area of bottom floor and side-wall, where also has larger pressure gradient.
File Size : 821,557 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT
Date Published : 18/07/2016
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