Dam & Safety ›› 2020, Vol. 0 ›› Issue (2): 38-.

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Application of CFD three-dimensional flow field numerical simulation technology for TBM assemble cavern at Jinping Ⅱ hydropower station

WU Jiang and ZHANG Ting   

  1. PowerChina Huadong Engineering Corporation Limited
  • Received:2019-08-07 Revised:2019-09-11 Online:2020-04-08 Published:2020-04-08

CFD三维流场数值仿真技术在锦屏二级水电站TBM组装洞中的应用

吴 疆1，张 婷2
  

  1. 1.中国电建集团华东勘测设计研究院有限公司，浙江 杭州，311122；2.浙江华东测绘地理信息有限公司，浙江 杭州，310014
  • 作者简介:吴 疆（1984— ），男，湖北黄冈人，高级工程师，研究方向为水电站引水发电系统。

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Abstract:

This study used the technique of CFD (Computational Fluid Dynamics) to simulate the flow field in TBM assemble cavern and analyzed each reconstruction scheme of TBM assemble cavern. The results showed that the conical angle of transition section in pressure tunnel should be smaller than 10°, which verified the rationality of the conclusion in DL/T 5195-2004 Specification for Design of Hydraulic Tunnel that the conical angle of transition section in pressure tunnel should be between 6°and 10°. At the same time, it illustrated the feasibility of CFD three- dimensional flow field numerical simulation technology in flow simulation for hydraulic tunnels.

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摘要：

利用CFD三维流场数值仿真技术模拟TBM组装洞内的水流流场分布，对TBM组装洞各改建方案进行比较分析，计算结果表明有压隧洞渐变段圆锥角宜小于10°，验证了DL/T 5195-2004《水工隧洞设计规范》中“有压隧洞渐变段的圆锥角以采用6°～10°为宜”结论的合理性[1]，同时也说明了CFD三维流场数值仿真技术在水工隧洞流态模拟上的可行性。

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