旋流式竖井泄洪洞空化特性试验研究  

Experimental Study of Swirling Shaft Spillway Tunnel Cavitation Characteristics

作　　者：严维[1] 王文[2] 

机构地区：[1]兰州资源环境职业技术学院,兰州730021 [2]四川大学水力学与山区河流开发保护国家重点实验室,成都610065

出　　处：《价值工程》2013年第35期57-58,共2页Value Engineering

摘　　要：本文根据两河口水电站竖井泄洪洞减压模型试验资料,对旋流式竖井泄洪洞空化特性进行了研究分析,表明涡室进口和锥形上端是空化发生区,空化发生的原因是由于负压和边界条件的突变,而锥形下端和环状水跃处不会发生空化,是由于在旋流竖井内掺气较为充分。Based on the test data of flood discharge tunnel pressure relief model of Lianghekou hydropower station, the paper analyzes the cavitation characteristics of swirling shaft spillway tunnel. The result confirms cavitation always occurs at volute chamber entrance and top conical vortex chamber. It is caused by negative pressure and abrupt change of boundary condition. Abrupt change does not occur at lower part of taper and circular hydraulic jump area, as the aeration in the swirl shaft is more fully.

关 键 词：竖井泄洪洞 空化 减压模型 

分 类 号：TV651.3[水利工程—水利水电工程]