Pressure fluctuation emasurement and flow visualizatin were made in a slurry pump impeller for the range of volumetric particle concentratin from 0 to 20 percent.Test particles ar four beads of 2.0 mm and 4.0 mm in a veraged diameter,and 1180 and 1930 kg/m~3 in density.The distributions of pressure and its fluctuations were measured in the test open impeller using phase locked ensemble averaging technique.A nonuniform blade-to-blade distribution of solid particles was observed in the particle images recorded by CCD camera.The measured pressure distributions are related to the particle concentration distributions,and hte influence of solid particles on flow phenomena and pump performance were confirmed.
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机译：在泥浆泵叶轮中进行压力波动测量和流动可视化处理，使颗粒浓度范围为0％至20％。测试颗粒为直径为2.0 mm和4.0 mm的四个小珠，直径分别为1180和1930 kg / m〜密度为3.使用锁相合平均技术在测试开放式叶轮中测量压力分布及其波动。在CCD相机记录的颗粒图像中观察到固体颗粒在叶片间的不均匀分布。分布与颗粒浓度分布有关，并确定了固体颗粒对流动现象和泵性能的影响。
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