| 摘要: |
| 采用数值模拟手段,计算了当引航道航道中心线与河流主流存在较大夹角时,船闸引航道口门区及其连接段区域不同流量下的水位、流速分布等水力特性.计算结果表明:各级流量下引航道口门区的斜流效应明显,影响口门区通航水流条件,分析各级流量下的通航水流条件后,确定其最高通航流量为4 000 m3/s,若要提高最高通航流量,应适当减小航道中心线与河道主流的夹角.通过对比分析数值模拟与物理模型试验的结果可知,该数学模型能较好地模拟引航道口门区水流条件. |
| 关键词: 数值模拟 物理模型 通航 引航道 |
| DOI： |
| 分类号:U641.211 |
| 基金项目:国家自然科学基金资助项目(50879006) |
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| Numerical simulation and analysis of navigation conditions in a shiplock approach channel |
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CHEN Hui,LIU Zhi-xiong,JIANG Yao-zu
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(Changjiang River Scientific Research Institute,Wuhan 430010,China)
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| Abstract: |
| Based on the numerical simulation of different discharges,water level and velocity distribution of a ship lock approach channel entrance and abutment are studied with a large angle between the mainstream of the river and the central line of the approach channel.The calculated results show that the channel entrance at all levels has oblique flow influencing navigation,and the maximum navigable flow is determined as 4 000 m3/s after analysis of navigation conditions,which can be improved by deceasing the above angle.Comparison with physical model experiment results show that this numerical model can well simulate the flow conditions of the approach channel entrance. |
| Key words: numerical simulation physical model navigation approach channel |
