| 用蒙特卡罗法解有压隧洞出口段水流问题 |
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| 引用本文： | 赵涛,牧振伟,邱秀云.用蒙特卡罗法解有压隧洞出口段水流问题[J].水力发电,2005,31(7):45-47,63. |
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| 作者姓名： | 赵涛 牧振伟 邱秀云 |
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| 作者单位： | 新疆农业大学水利与土木工程学院,新疆,乌鲁木齐,830052 |
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| 摘 要： | 利用不规则游动网格的蒙特卡罗法对有压隧洞出口段水流进行了数值模拟。根据数值计算与模型试验结果的比较，得出具有凸形曲面边界（包括折面底坡）负压区的存在不仅是边界层分离所致，边壁弯曲使过流产生的离心力也是产生负压的重要原因的结论。计算结果表明：蒙特卡罗法灵活简单、结果稳定，计算结果与实测结果吻合较好。
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| 关 键 词： | 有压隧洞 水流 蒙特卡罗法 数值模拟 负压 |
| 文章编号： | 0559-9342（2005）07-0045-03 |
| 收稿时间： | 2005-02-15 |
| 修稿时间： | 2005-02-15 |
Monte Carlo method for simulating flow in outlet structure of pressure tunnel |
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| Zhao Tao,Mu Zhen-Wei,Qiu Xiu-Yun.Monte Carlo method for simulating flow in outlet structure of pressure tunnel[J].Water Power,2005,31(7):45-47,63. |
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| Authors: | Zhao Tao Mu Zhen-Wei Qiu Xiu-Yun |
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| Abstract: | The flow in outlet structure of pressure tunnel is simulated by using Monte Carlo method with irregular random walking grids in this paper. According to the comparison between simulation results and laboratory measurements, this paper reaches the conclusion that the negative pressure region in convex boundary (including broken line gradient) not only caused by boundary layer separation, but also especially caused by centrifugal force which is the result of convex boundary. Overall, the computational simulations agree well with the experiments and show that the method is a very flexible tool and the results are stable. |
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| Keywords: | pressure tunnel flow in outlet structure Monte Carlo method numerical modeling negative pressure |
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