부분 디퓨저 베인의 배열이 원심펌프의 수력성능에 미치는 영향

초록

In this study, a numerical investigation was performed to determine the effects of the arrangement of partial diffuser vanes on the hydraulic performance of a centrifugal pump. Three-dimensional Reynolds-averaged Navier-Stokes analysis was conducted using the shear stress transport turbulence model. For the reference shape of the diffuser, which has the full height of the vane, a grid-dependency test was performed to identify the optimal grid system, and numerical results were validated with experimental data. Three diffusers with different configurations were used as test cases. The hydraulic efficiency, pressure recovery coefficient, and flow coefficient for the operating range were defined as performance parameters. Additionally, internal flow fields were evaluated to further investigate the relation with performance.

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