Abstract
Numerical analysis is carried out to investigate the hydraulic performance of the mixed-flow pump according to the blade thickness. The concept of Blockage is employed to express the quantitative amount of the blade thickness. The finite volume method, which is approximate analysis method based on the three-dimensional Reynolds-averaged Navier-Stokes (RANS) equation, was applied for discretization of governing equations. The shear stress transport (SST) model was used as the turbulence model and the hexahedral grids system was selected as the appropriate number of nodes through the grid dependency test. The effects of the hydraulic performance on the blockage are analyzed with detailed flow characteristics and variation of the best efficiency point in the performance curves. With this study, it is possible to select the optimal value for blade thickness of the pump.
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