带侧堰压力前池的非恒定流计算  

Analysis of Unsteady Flow in Forebay with Overflow Weir

作　　者：赵大威[1] 刘华[1] 胡岚平 罗佩玉 赵津尉 

机构地区：[1]四川大学水利水电学院,四川成都610065 [2]四川省港航开发有限责任公司,四川成都610041

出　　处：《水电能源科学》2015年第5期87-89,共3页Water Resources and Power

摘　　要：研究水力过渡过程中压力前池的最高、最低涌波水位,对于确定隧洞或渠顶高程及压力钢管进口高程有重要参照意义。考虑引水渠道末端扩散段及压力钢管对涌波水位的影响,建立了无压引水渠道—压力前池—压力管道非恒定流计算的整体计算模型,计算了电站在增、甩负荷工况下,前池水位的波动过程。结果表明,考虑扩散段和侧堰的影响,计算模型更符合工程实际,可为初步设计提供参考。Analyzing the highest and lowest surge wave at the end of forebay is significantly meaningful to identify the elevation of the top of tunnel or channel and the inlet of penstock. The complete mathematical model of open channel, forebay and penstock unsteady flow has been built hy taking the impact of diffuser and penstock into account. Moreover, the water level fluctuation has been computed under the variation load of hydropower plant. By applying boundary condi- tions of diffuser and overflow weir, the mathematical model conforms to the real project, which can provide reference for initial design of forehay and channel.

关 键 词：压力前池 非恒定流 水力过渡 侧堰 

分 类 号：TV732.6[水利工程—水利水电工程]