摘要
采用三维水动力学模型,借助非结构网格重构地形,开展了金沙江干流山区水库通航流态的数值模拟研究。以攀枝花河段为例,选取不同的来流条件进行了模拟,重点关注了水深、流速、平面流场和典型弯道的环流结构等水动力学特性,进一步对河段可能的碍航点进行了分析。计算结果表明:在一定的出流边界条件下,河道水深整体呈沿程递增趋势,基本可满足三级航道标准;同时某些流量级下,局部卡口、突扩和弯道河段可能出现碍航流态。研究结果可为金沙江梯级水库群联合调度提供技术参考。
This study aims at investigating the navigable flow condition of mountain reservoir on Jinsha River through three-dimensional（ 3-D） numerical simulation. The non-structural grids were employed for terrain representation and various discharges were adopted as the incoming boundary conditions. Taking Panzhihua reach as an example,we preferentially simulated the hydrodynamics characteristics under certain inflow boundary conditions,mainly focusing on the distribution of water depth,velocity,flow field and circulating flow. Furtherly,the probable obstructing navigation areas were analyzed. The results revealed that the water depth increased along the river,basically meeting navigation demand of three-level channel. While under some inflow conditions,there exists obstructing navigation areas in the local narrow channel,sudden-expansion channel and bend channel. The research results can provide technical reference to the joint operation of cascade reservoirs on the Jinsha River.
作者
李肖男
李安强
钟德钰
喻杉
王永强
LI Xiaonan;LI Anqiang;ZHONG Deyu;YU Shah;WANG Yongqiang(Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;Water Resources Depart,tent,Changjiang River Scientific Research Institute,Wuhan 430010,China)
出处
《人民长江》
北大核心
2018年第13期38-43,共6页
Yangtze River
基金
国家重点研发计划项目(2016YFC0402209)
国家自然科学基金资助项目(51379102
51409008)
关键词
三维数值模拟
通航流态
梯级水库
山区水库
金沙江
3 -D numerical simulation
navigable flow condition
cascade reservoir
mountain reservoir
Jinsha River
