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| 双浅水垫消力池水力特性的数值模拟与试验研究 | |
| 引用本文： | 刘达,李连侠,黄本胜,廖华胜.双浅水垫消力池水力特性的数值模拟与试验研究[J].水利学报,2012,43(5):623-630. |
| 作者姓名： | 刘达 李连侠 黄本胜 廖华胜 |
| 作者单位： | 1. 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 广东省水利水电科学研究院,广东广州510610 广东省水动力学应用研究重点实验室,广东广州510610 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 3. 广东省水利水电科学研究院,广东广州510610 广东省水动力学应用研究重点实验室,广东广州510610 |
| 基金项目： | 国家自然科学基金资助项目(51079091)致谢:本文试验工作得到沈焕荣副教授和易文敏讲师的指导和帮助;特此致谢 |
| 摘 要： | 结合大渡河泸定水电站右岸2#泄洪洞出口消力池体型优化试验,在一般浅水垫消力池体型的基础上,提出了一种双浅水垫消力池的新体型。为了深入探究该型消力池的消能机理及其水力特性,采用三维RNGk-ε紊流模型对双浅水垫消力池进行了数值模拟计算研究,并与传统的底流消力池及单浅水垫消力池(跌坎式)的数值计算结果进行了对比分析。结果表明,双浅水垫消力池更能充分发挥浅水垫的"垫层"作用,能有效地降低消力池临底流速,水跃流态更好且稳定,消能效果较佳;同时,消力池底板动水压力分布也更加均匀,对消力池稳定性和安全有利。 |
| 关 键 词： | 浅水垫消力池 RNGk-ε紊流模型 数值模拟 消能 |
Numerical simulation and experimental investigation on stilling basin with double shallow-water cushions |
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| LIU D,LI Lian-xi,HUANG Ben-sheng and LIAO Hua-sheng.Numerical simulation and experimental investigation on stilling basin with double shallow-water cushions[J].Journal of Hydraulic Engineering,2012,43(5):623-630. | |
| Authors: | LIU D LI Lian-xi HUANG Ben-sheng and LIAO Hua-sheng |
| Affiliation: | 1 (1.Sichuan Univ.,Chengdu 610065,China;2.Guangdong research institute of water resources and hydropower,Guangzhou 510610,China;3.Guangdong Key Laboratory of Hydrodynamic Research,Guangzhou 510610,China) |
| Abstract: | A new type of stilling basin with double shallow-water cushions was proposed based on a model for the Luding Hydropower Project.The hydraulic performances of the new type stilling basin such as flow pattern,water surface profile,velocity and pressure distributions were studied by means of numerical simulation using 3D RNG k-ε turbulence model,which are in good agreement with the experimental data.Both numerical and experimental results indicate that the proposed double shallow water cushions can make full advantages of water-cushion to reduce the velocity near the bottom effectively,redistribute the pressure on stilling basin floor,and significantly improve the energy dissipation rate. |
| Keywords: | stilling basin with shallow-water cushion RNG k-ε turbulence model numerical simulation energy dissipation |
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