摘要
为减免水电站下泄低温水对下游河段生态环境的影响,糯扎渡水电站进水口拟采用分层取水方案。结合糯扎渡水电站进水口两种取水方案(双层取水方案和多层取水叠梁门方案),采用k-ε紊流模型对不同形式进水口的水力学特性进行了三维数值模拟,在进水口水头损失、流速分布以及流态等方面进行了分析和比较,从水力学方面论证了分层取水方案的可行性。数值模拟结果得到了物理模型试验结果的验证。
To reduce the negative effect of lower-temperature water released by the hydropower plant on the environment in its downstream reach,a multi-levels intake structure（MLIS） is adopted in the design of Nuozhadu hydropower station.Hydraulic behaviors of this intake are studied by using a 3D k-ε turbulent model to simulate head loss,velocity distribution and flow pattern,and a double-level intake scheme is compared with a multi-levels stop-log gate scheme.The calculations are verified by the test results on a physical model.By the results of this study,it is feasible for Nuozhadu hydropower to adopt the multi-levels intake scheme.
出处
《水力发电学报》
EI
CSCD
北大核心
2010年第6期132-137,共6页
Journal of Hydroelectric Engineering
基金
国家自然科学基金(50879054)
博士点基金(200800560042)
云南省科技计划项目(2006GG19)
关键词
环境水力学
糯扎渡水电站
多层进水口
K-Ε紊流模型
水头损失
流速分布
流态
environmental hydraulics
Nuozhadu hydropower station
multi-levels intake structure
k-ε turbulent model
head loss
velocity distribution
flow pattern
