| 摘要: |
| 基于流体计算软件FLUENT，模拟某水电站库区近坝变形体可能失稳后下滑引起库区水面变化过程，分析初始涌浪形成以及涌浪在对岸爬坡和涌浪沿岸传播的过程；研究挡水建筑物对库区涌浪沿岸传播的影响，得出初始涌浪高度，以及对岸、沿岸、坝址处的最大浪高，并与潘家铮法估算结果进行对比分析。分析结果表明，数值模拟能较好反映波浪爬坡和沿岸传播过程，真实模拟库区水体相互作用；由于库区涌浪运动受大坝建筑物阻挡作用，库区水面的反复震荡和涌浪叠加，会形成更高的涌浪。计算的初始涌浪及库区各处的最大涌高更符合实际情况，可为近坝库区的工程设计及涌浪灾害的预防提供参考。 |
| 关键词: 库区 滑坡体 爬坡过程 最大浪高 涌浪叠加 挡水建筑物 数值模拟 |
| DOI： |
| 分类号:TV697;O242 |
| 基金项目: |
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| Numerical simulation of the surge based on FLUENT software |
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DENG Cheng-jin, YUAN Qiu-shuang, HOU Yan-hua, JIA Wei
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HydroChina Xibei Engineering Corporation
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| Abstract: |
| Based on the fluid calculation FLUENT software, surge changes within the reservoir area and its propagation along the reservoir bank, caused by possible instability of the landslide-induced deformation body in the reservoir area of a hydropower station, have been simulated. Some impacts of the water retaining structure upon surge propagation along the reservoir bank are taken into consideration and analyzed, and the initial swell height, and the maximum wave height along the opposite bank, the reservoir bank and the dam site are obtained by calculation analysis, and compared with the calculated results given by PAN Jia-zheng method. Analysis results show that the numerical simulation can well reflect the wave run-up process over the bank slope and wave propagation along the reservoir banks, and the interaction by the wavy water surface and the surge superposition in the reservoir area is actually simulated. Due to barrier effect given by the dam structure, a higher swell is formed by repeated water surface oscillation with the surge superposition in the reservoir area. Thus the calculated initial swell and the maximum surge height within the reservoir area well conform to the actual situation, which can provide references for the engineering design and surge disaster prevention of the reservoir area close to the dam site. |
| Key words: reservoir area landslide waves run-up process the maximum surge surge superposition water retaining structure numerical simulation |
