三峡水库香溪河库湾水温结构及其对水动力影响的数值模拟
发布时间：2019-08-09 20:23
【摘要】：利用Delft3D数值模拟软件,建立三峡水库香溪河库湾z坐标系下三维水动力-水温耦合数学模型,根据2009年实测资料,通过数值模拟分析了库湾在各月的垂向和水平温度分布特征,研究了水温结构对库湾水动力的影响。结果表明,香溪河上游在枯水期垂向水温存在弱分层现象;而库湾水体在4~5月和汛期(6~8月),在距离河口18~30km范围内始终保持稳定分层,但在蓄水期(9~10月)和枯水期(11月~次年2月)仅在库湾底部存在水温分层,并给出了香溪河库湾及河口全年分层异向流动的演变过程,研究结果可为香溪河库湾水生态环境保护提供参考。
[Abstract]:Using Delft3D numerical simulation software, a three-dimensional hydrodynamic-water temperature coupling mathematical model under z coordinate system of Xiangxi River reservoir bay in the three Gorges Reservoir is established. According to the measured data in 2009, the vertical and horizontal temperature distribution characteristics of the reservoir bay in each month are analyzed by numerical simulation, and the influence of water temperature structure on the hydrodynamic force of the reservoir bay is studied. The results show that there is a weak stratification phenomenon in the vertical water temperature in the upper reaches of Xiangxi River during the dry season. However, in April to May and flood season (June to August), the water body of Kuwan maintained stable stratification in the range of 18~30km from estuary, but only in the bottom of reservoir bay during storage period (September to October) and dry season (November to February of the following year). The evolution process of stratified abnormal flow in Xiangxi River Kuwan and estuary in the whole year was given. The results can provide a reference for the protection of aquatic ecological environment in Xiangxi River Kuwan.
【作者单位】： 河海大学水文水资源与水利工程科学国家重点实验室;河海大学水利水电学院;
【基金】：国家自然科学基金项目(51479058)
【分类号】：TV697.21
[Abstract]:Using Delft3D numerical simulation software, a three-dimensional hydrodynamic-water temperature coupling mathematical model under z coordinate system of Xiangxi River reservoir bay in the three Gorges Reservoir is established. According to the measured data in 2009, the vertical and horizontal temperature distribution characteristics of the reservoir bay in each month are analyzed by numerical simulation, and the influence of water temperature structure on the hydrodynamic force of the reservoir bay is studied. The results show that there is a weak stratification phenomenon in the vertical water temperature in the upper reaches of Xiangxi River during the dry season. However, in April to May and flood season (June to August), the water body of Kuwan maintained stable stratification in the range of 18~30km from estuary, but only in the bottom of reservoir bay during storage period (September to October) and dry season (November to February of the following year). The evolution process of stratified abnormal flow in Xiangxi River Kuwan and estuary in the whole year was given. The results can provide a reference for the protection of aquatic ecological environment in Xiangxi River Kuwan.
【作者单位】： 河海大学水文水资源与水利工程科学国家重点实验室;河海大学水利水电学院;
【基金】：国家自然科学基金项目(51479058)
【分类号】：TV697.21
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