| 高水头泄洪底孔水力学研究方法适宜性分析 |
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| 引用本文： | 罗永钦.高水头泄洪底孔水力学研究方法适宜性分析[J].水科学进展,2015,26(2):265-270. |
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| 作者姓名： | 罗永钦 |
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| 作者单位： | 中国电建集团昆明勘测设计研究院有限公司, 云南昆明 650033 |
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| 基金项目： | 中国水电工程顾问集团有限公司科技项目(GW-KJ-2013-13)~~ |
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| 摘 要： | 水力学问题研究方法多样且各具特点,各类方法所获成果的异同性倍受关注。基于某水电站高水头泄洪底孔,应用物理模型试验、水力学原型观测及时均化的紊流数学模型对水力学问题进行模拟或观测,辨识出3种研究方法的适宜范围及程度,三者对于宏观水力流态、底流速、时均压力及掺气空腔的模拟成果吻合良好,水面线模拟有一定差异,原型水面波动、水舌纵向扩散更大,成果可引导此类型水力学问题的研究方法选择及成果修正。
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| 关 键 词： | 泄洪底孔 物理模型 原型观测 数值模拟 |
| 收稿时间： | 2014-05-27 |
Adaptability analysis of hydraulics research method on the bottom outlet of flood discharge with high water head |
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| LUO Yongqin.Adaptability analysis of hydraulics research method on the bottom outlet of flood discharge with high water head[J].Advances in Water Science,2015,26(2):265-270. |
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| Authors: | LUO Yongqin |
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| Institution: | Hydrochina Kunming Engineering Corporation Limited, Kunming 650033, China |
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| Abstract: | The research methods of hydraulics are diverse and each method has its characteristics. It is more concerned for the similarities and differences of reached achievements from all kinds of methods. Based on the bottom outlet of flood discharge with high water head in one hydropower station, the simulation and observation are carried through for the hydraulic issues by applying the physical modeling experiment, the prototype measurement of hydraulics and the time-averaged turbulence mathematical model. The adaptable scope and degree of three kinds of methods are identified. It is identical well for the simulated results of three methods with the macroscopic hydraulic flow state, bottom flow velocity, time-averaged pressure and aerated cavity. Meanwhile, there is a certain difference in the simulation of flow profile. The fluctuation prototypical water surface and longitudinal diffusion of water jets are larger. The achievement can be used to lead the selection of research method and correction of achievement for this type of hydraulic issues. |
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| Keywords: | bottom outlet of flood discharge physical model prototype measurement numerical simulation |
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