摘要
利用自行设计的专门实验设备,对脉动压力在缝隙中的传播规律进行了实验研究。结果表明,1)缝隙内水体流动系受进口边界条件控制的流动;2)缝隙末端开口时,缝隙中脉动压力振幅沿程减小;3)缝隙末端封闭时,缝隙内脉动压力振幅沿程增加;4)缝隙中的脉动压力在传播过程中均出现倍频放大现象。
The laws of fluctuation pressure propagation in fissures are studied experimentally in lab. Some results are obtained:1the flow pattern in fissures is controlled by the boundaries of entrance;2the amplitude of fluctuating pressure will be reduced in the passage of fissure if the exit is open, but it tends to increase in case the exit is blocked; 3the phenomenon of amplitude multiplier due to multiple frequency is found in the process of pressure propagation.
出处
《水利学报》
EI
CSCD
北大核心
2002年第12期44-48,共5页
Journal of Hydraulic Engineering
基金
本文得到四川大学高速水力学国家重点实验室开放基金资助
关键词
脉动压力
缝隙
传播特性
实验
fluctuation pressure
fissure
propagation
experimental study
