| 斜压作用对河口落潮水流剖面的影响 |
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| 引用本文： | 陈 鹏,张 卓,宋志尧,李玉婷.斜压作用对河口落潮水流剖面的影响[J].水运工程,2019(7):38-43. |
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| 作者姓名： | 陈 鹏 张 卓 宋志尧 李玉婷 |
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| 作者单位： | 南京师范大学虚拟地理环境教育部重点实验室;江苏省地理信息资源开发与利用协同创新中心;大规模复杂系统数值模拟江苏省重点实验室 |
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| 基金项目： | 国家重点研发计划项目（2018YFB0505500、2018YFB0505502） |
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| 摘 要： | 在咸淡水混合的河口由于水体密度在空间不均匀分布,水流受到斜压影响,其流速分布经常会偏离传统的对数分布。而常用的密度流分布基于常涡黏系数假定,无法用于瞬时流速剖面的拟合。基于水动力方程,得出考虑斜压影响下的湍流切应力分布,分析发现在斜压影响下的湍流切应力呈抛物线分布。在此基础上应用Prandtl混合长理论,提出考虑河口斜压影响的落潮水流流速剖面。通过比较数值模拟结果与实测资料,发现本文公式能很好地校正斜压引起流速剖面对于传统对数分布的偏差,提高拟合精度,得到更趋于合理的拟合参数。
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| 关 键 词： | 斜压 流速分布 河口 对数分布 摩阻流速 |
Effect of baroclinic force on velocity profile of ebb flow in estuary |
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| CHEN Peng,ZHANG Zhuo,SONG Zhi-yao and LI Yu-ting.Effect of baroclinic force on velocity profile of ebb flow in estuary[J].Port & Waterway Engineering,2019(7):38-43. |
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| Authors: | CHEN Peng ZHANG Zhuo SONG Zhi-yao and LI Yu-ting |
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| Institution: | Key Lab of Virtual Geographic Environment under Ministry of Education,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China,Key Lab of Virtual Geographic Environment under Ministry of Education,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China,Key Lab of Virtual Geographic Environment under Ministry of Education,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China;Jiangsu Provincial Key Laboratory for Numerical Simulation of Large Scale Complex System,Nanjing 210023,China and Key Lab of Virtual Geographic Environment under Ministry of Education,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China |
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