【摘要】 本文针对白鹤滩电站1000MW模型混流式水轮机,在8.47mm小开度、58.8r/min单位转速下的计算工况点进行非定常数值模拟。通过提取和分析各个过流部件内部空间测点的压力脉动信号,得到了混流式水轮机内部压力脉动的分布特点和传播变化觃律。更多还原

【Abstract】 This paper is focused on pressure fluctuation in 1000 MW model Francis Turbine. Under 8.47 mm guide vane opening, the unsteady numerical simulation is carried out in following twounit-speed: 58.8 r/min. We study the pressure fluctuation in the different areas of Francis Turbine, and the propagation law along the flow direction as well. How much the rotational speed of runner will influence frequency as well as amplitude of pressure fluctuation is showed in this paper.更多还原