| 摘要: |
| 本文给出了一个实用、有效的三维泄洪洞水流数值模型。对泄洪洞进口段采用势流模型，对明流段则考虑了阻力与边界层发展的影响，提出了一种既适合内部边界层区，又适合外部边界层区的数值计算方法，使之能合理地模拟龙抬头式泄洪洞的水流特性。验证计算及工程应用表明，该数值模型具有较高的精度，能满足工程要求。 |
| 关键词: 数学模型，泄洪洞，进口段，明流段，水流 |
| DOI： |
| 分类号:TV135.203 |
| 基金项目:“八五”国家重点科技攻关项目 |
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| A numerical model for spillway tunnel flow and its application |
|
Ding Daoyang, Wu Shiqiang
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Nanjing Hydraulic Research Institute
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| Abstract: |
| This paper presents a practical and effective 3 - D numerical model for spillway tunnel flow.In which potential now model is applied to the raised tunnel intake and a new method is developed for the free level section on base of the consideration of the influences of roughness and boundary layer development. The method is not only suitable to the internal boundary layer region but also to the external potential flow region. Thus it can reasonably simulate the flow characteristics of spillway tunnel. Results of some verified computations and engineering reveal that this numerical method has higher precision and can meet the requirements in practical engineering. |
| Key words: numerical model, spillway tunnel, rasied tunnel intake, free level tunnel,flow |
