The influence of sediment media on the blade pressure and cavitation of a tubular turbine was investigated in this study. The Zwart–Geber–Belamri cavitation model and the shear stress transport k–w turbulence model were applied to numerically simulate and experimentally validate the full flow path of the tubular turbine under combined conditions for sediment particle sizes of 0.01 and 0.05 mm and concentrations of 1%, 1.5%, and 2%. The results show that the pressure of the blade increases with the sediment concentration. Cavitation mainly occurs between the blade shroud and the leading edge. The higher the sediment concentration, the lower the vapor volume fraction at the same sediment particle size. The presence of sediments inhibits further cavitation development, and the inhibition effect is significant. At the same concentration, the larger the particle size of the sediment, the lower the vapor volume fraction. Thus, the increase in the particle size inhibits cavitation, but the inhibition effect is not significant.

本研究研究了沉积介质对管状涡轮叶片压力和空化的影响。Zwart-Geber-Belamri 空化模型和剪切应力传输ķ–w应用湍流模型对0.01和0.05 mm沉积物粒径和1%、1.5%和2%浓度的组合条件下管式涡轮机的全流路进行数值模拟和实验验证。结果表明，叶片的压力随着泥沙浓度的增加而增加。气蚀主要发生在叶片护罩和前缘之间。泥沙浓度越高，相同泥沙粒径下的蒸汽体积分数越低。沉积物的存在抑制了空化的进一步发展，抑制效果显着。在相同浓度下，沉积物粒径越大，蒸气体积分数越低。因此，粒径的增加抑制了空化，但抑制效果并不显着。