摘要
通过模型试验,研究了进口形成漏斗旋涡后隧内内脉动壁压的变化情况。结果表明:进口形成漏斗旋涡会显著加强脉动壁压,但此脉动壁压将沿流程衰减。文中还分析了脉动壁压增加对空化数的影响。
In this paper, model test results are proposed from an investigation of pressure fluctuations within a tunnel of construction diversion. Different conditions regarding the presence and absence of a vortex on the water surface of the tunnel intake have been considered in the experiments. Data from sets of pressure transducers within the tunnel have been analyzed and the results show that the strength of the pressure fluctuations are significantly increased as a steady vortex is formed on the water surface of the tunnel intake. The results also show that the strength of pressure fluctuations are decayed with the increasing distance away from the tunnel intake.
关键词
有压管道
进口
漏斗旋涡
脉动压强
pressure intake, vortex, effect, pressure fluctuation
