水科学进展2012，Vol.23Issue(1)：110-116,7.DOI:32.1309.P.20120104.2014.011
高坝明流泄洪洞掺气减蚀三维数值模拟分析
Numerical simulation of aeration and cavitation in high dam spillway tunnels
摘要
Abstract
The aeration problem in spillway tunnels has attracted much attention in hydropower projects. A hydrody-namic model study of aeration devices is conducted for the 3 spillway tunnel of Xiluodu Power Station. The study uses a 3-D numerical model and a segmentation algorithm to simulate the flow field in the tunnel. The result shows that the simulation agrees well with the experimental data from a large-scale physical model test. The layout and design of spillway aeration devices, and the clearance between the water surface and the top of the tunnel are proven to be reasonably arranged for the 3* spillway tunnel according to the model simulations. The simulation proves the complicate nature of hydraulic regime in the ogee section. The emphasis should be on the design of the ogee section and its construction. The use of segmentation algorithms can improve the computational efficiency of high-speed flow simulation with presence of large velocity gradients.关键词
高坝/明流泄洪洞/掺气减蚀/数值模拟/分段计算Key words
high dam/ spillway tunnel/ aeration and cavitation/ numerical simulation/ segmentation algorithm分类
建筑与水利引用本文复制引用
罗永钦,刁明军,何大明,白绍学..高坝明流泄洪洞掺气减蚀三维数值模拟分析[J].水科学进展,2012,23(1):110-116,7.基金项目
"十二五"国家科技支撑计划资助项目(2011BAC09B07) （2011BAC09B07）
国家科技部科技基础性工作专项资助项目(2008FY110300) （2008FY110300）
