| 深埋长引水隧洞对电站下游水温的影响 |
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| 引用本文： | 李然,李克锋,邓云,陈明千.深埋长引水隧洞对电站下游水温的影响[J].水科学进展,2004,15(5):588-592. |
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| 作者姓名： | 李然 李克锋 邓云 陈明千 |
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| 作者单位： | 四川大学高速水力学国家重点实验室, 四川, 成都, 610065 |
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| 基金项目： | 国家自然科学基金资助项目(50279025)~~ |
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| 摘 要： | 引水式水电站深埋长引水隧洞对电站下游水温的影响直接关系到下游水生物生境.采用k-ε模型,结合能量传输方程建立了引水隧洞三维水温预测模型,并在利用原型观测资料验证模型的基础上,对拟建的锦屏二级引水隧洞的水温进行了预测.预测结果表明,由于雅砻江上拟建的锦屏二级隧洞洞径与过流量较大,水流在隧洞内滞流时间短,水温升高不明显.由于模型采用隧洞实际空间布置数据,建立包括混凝土衬砌区域在内的三维空间计算域,同时考虑温度场与流场的相互影响,实现了对温度场的精确模拟,从而可为水电站设计和水生物保护提供科学依据.
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| 关 键 词： | 引水隧洞 电站下游 水温 数值模拟 |
| 文章编号： | 1001-6791(2004)05-0588-05 |
| 收稿时间： | 2003-06-16 |
| 修稿时间： | 2003年6月16日 |
Influence of long and deep buried diversion tunnel on water temperature in downstream of hydro-power plant |
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| LI Ran,LI Ke-feng,DENG Yun,CHEN Ming-qian Speed Flows,Sichuan University,Chengdu ,China.Influence of long and deep buried diversion tunnel on water temperature in downstream of hydro-power plant[J].Advances in Water Science,2004,15(5):588-592. |
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| Authors: | LI Ran LI Ke-feng DENG Yun CHEN Ming-qian Speed Flows Sichuan University Chengdu China |
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| Institution: | State Key Hydraulics Laboratory of High Speed Flows, Sichuan University, Chengdu 610065, China |
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| Abstract: | How does the long and deep buried diversion tunnel influence the water temperature in an important question related to downstream aquatic organisms.A 3D numerical temperature model for diversion tunnel is established by combining the k-ε model and the energy transport equation.The model is tested with the prototype observed data.The water temperature of the diversion tunnel of Jinping second cascade to be built is predicted and it shows that the increase of the water temperature through the tunnel is not obvious due to the big flow rate,short retention time and large diameter of the tunnel.As the actual full size data is used to build up the computational zone including the concrete lining zone and the action between temperature and velocity field is taken into account,the model can accurately simulate the temperature field and provide scientific reference for the design of hydropower stations and protection of aquatic organisms. |
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| Keywords: | diversion tunnel downstream of hydro-power plant water temperature numerical simulation |
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