邓军,许唯临,雷 军,刁明军.高水头岸边泄洪洞水力特性的数值模拟[J].水利学报,2005,36(10):1209-1212 |
高水头岸边泄洪洞水力特性的数值模拟 |
Numerical simulation of hydraulic characteristics of high head spillway tunnel |
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DOI: |
中文关键词: 泄洪洞 水力特性 数值模拟 k-ε双方程紊流模型 VOF方法 |
英文关键词: spillway tunnel hydraulic characteristics numerical simulation k-εdouble-equation turbulence model VOF method |
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中文摘要: |
为了探索采用数值模拟的方法来研究高水头岸边泄洪洞水力特性的可行性,用Fluent商用计算软件,对某电站岸边泄洪洞进行了数值模拟研究,得到了泄流能力、压强沿程分布、水流空化数、通气设施进气量、空腔形态及挑距等,并将部分计算结果与模型试验结果进行了比较,两者符合较好,表明采用数值模拟的方法研究龙落尾式泄洪洞的水流是可行的。但是,数值模拟暂时不能正确的反映掺气水深及洞顶余幅。 |
英文摘要: |
The universal software Fluent is applied to study the hydraulic characteristics of a spillway tunnel. The discharge capacity,distribution of pressure along the flow direction, cavitation index of flow,ventilation demand and cavity length of aeration facilities are calculated. The results are in good agreement with model test. The successful simulation shows that by combining the k-εdouble equations turbulence model with VOF method the flow in complicated spillway tunnel can be numerically calculated. However, the simulation did not provide the aeration concentration distribution of the flow,the problem of accurately calculating remaining height of the tunnel is still pending to be solved. |
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