| 高水头大流量泄洪隧洞体型优化数值模拟研究 |
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| 引用本文： | 杨忠超,刁明军,邓军.高水头大流量泄洪隧洞体型优化数值模拟研究[J].重庆交通大学学报(自然科学版),2009,28(5):855-860. |
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| 作者姓名： | 杨忠超 刁明军 邓军 |
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| 作者单位： | 1. 重庆交通大学,内河航道整治技术交通行业重点实验室,重庆400074
2. 四川大学水力学与山区河流开发保护国家重点实验室,四川,成都610065 |
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| 基金项目： | 重庆市教委基金项目，重庆市科委基金项目，重庆交通大学人才启动基金项目 |
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| 摘 要： | 采用VOF法和k-ε紊流模型相结合对金沙江溪洛渡水电站3#泄洪隧洞泄洪过程进行了数值模拟,针对设计体型存在的第二、第三级掺气坎的掺气空腔长度和高度偏小,龙落尾段的水流流速过高,空化数局部偏小的问题,优化了泄洪隧洞奥奇段体型,调整了掺气坎的布置,使泄洪隧道压强分布更趋均匀,空化数分布趋于平稳,从而改善了泄洪隧洞水流的空蚀空化特性。同时增大了掺气空间,加大了泄洪隧洞的掺气保护长度。
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| 关 键 词： | 泄洪隧洞 优化体型 紊流数值模拟 VOF法 空蚀 |
Numerical Study on Configuration Optimization of High Head Large Flood Discharge Tunnel |
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| YANG Zhong-chao,DIAO Ming-jun,DENG Jun.Numerical Study on Configuration Optimization of High Head Large Flood Discharge Tunnel[J].Journal of Chongqing Jiaotong University,2009,28(5):855-860. |
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| Authors: | YANG Zhong-chao DIAO Ming-jun DENG Jun |
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| Institution: | YANG Zhong-chao1,DIAO Ming-jun2,DENG Jun2(1.Key Laboratory of Inl, Waterway Regulation Engineering of Ministry of Communication,Chongqing Jiaotong University,Chongqing 400074,China,2.State Key Laboratory of Hydraulics & Mountain River Engineering,Sichuan University,Sichuan Chengdu 610065,China) |
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| Abstract: | The flood discharge process of 3# flood discharge tunnel at Xiluodu Power Station in Jinsha River has been simulated successfully by means of k-ε turbulence model and VOF(Volume of Fluid)methods.Aiming at the problems that the length and the height of the second and third aeration cavity is too small,and the local cavitation number is too low,the flood discharge configuration is optimized and aeration banks are adjusted,so that the pressure of the flood discharge tunnel inclines to distribute more homogenous and the distribution of cavitation number inclines to stable,which promotes the character of flow cavitation erosion.In addition,the aeration space is enlarged so as to extend the protecting length of cavitation erosion of flood discharge tunnel. |
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| Keywords: | flood discharge tunnel configuration optimization turbulent numerical simulation volume of fluid(VOF)method cavitation erosion |
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