| 齐春风， 彭 伟， 欧阳群安， 普晓刚.船闸下游口门区水流结构特征及流速极值预测方法Journal of Water Resources and Water Engineering[J].,2022,33(2):124-129 |
| 船闸下游口门区水流结构特征及流速极值预测方法 |
| Flow structure characteristics and extreme velocity prediction method in the downstream entrance area of the navigation lock |
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| DOI：10.11705/j.issn.1672-643X.2022.02.16 |
| 中文关键词: 船闸 口门区 水流结构 流速极值 通航条件 五强溪水利枢纽 |
| 英文关键词: navigation lock entrance area flow structure navigation condition Wuqiangxi Water Conservancy Complex |
| 基金项目:中央级公益性科研院所基本科研业务费专项资金项目(TKS20210107) |
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| 中文摘要: |
| 为明确船闸下游口门区水流结构特征并实现口门区通航水流条件定量预测，以船闸下游口门区概化模型为基础，采用数值模拟方法，开展了船闸下游口门区通航水流条件计算，研究了口门区水流结构特征和通航水流条件分布规律，并对来流流速、入流角、口门区几何参数等因素进行敏感性分析，提出了船闸下游口门区流速极值预测公式。结果表明：船闸下游口门区水流结构呈平面二维形态，经实际工程物理模型实测数据验证，回归分析得到的口门区流速极值预测公式的可靠性较好，为类似工程船闸下游口门区通航水流条件研究提供了一种方便快捷的预测方法。 |
| 英文摘要: |
| In order to clarify the characteristics of the flow structure in the downstream entrance area of the navigation lock, so as to realize the quantitative prediction of the navigable flow conditions, a numerical simulation method was used to carry out the calculation of the navigable flow conditions based on the generalized model of the entrance area. Meanwhile, the flow structure characteristics and flow condition distribution law in the entrance area were analyzed. Based on the sensitivity analysis of the inflow velocity, inflow angle, and geometric parameters of the entrance area, a prediction formula for the extreme velocity in the downstream entrance area of the navigation lock was proposed. The results show that the flow structures in the downstream entrance area of the navigation lock is in a two-dimensional form and the prediction formula for the extreme velocity obtained by the regression analysis is reliable according to the verification results of the actual measured data of the specific engineering model. The proposed prediction formula is convenient and efficient, which provides a new approach to the prediction of navigable flow conditions in the downstream entrance area of similar navigation locks. |
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