Turbulent models and axial flow pump performance prediction

Based on the 3D RANS equations, the Standard k - epsilon, RNG k - epsilon, Realizable k - epsilon, Standard k - omega and SST k - omega turbulence models were adopted to carry out the 3D numerical simulation of the internal flow within an axial flow pump whose specific speed equals to 1000 under different operating conditions. The head and the efficiency of axial flow pump were calculated and compared with the experimental data. It shows that the calculated results agree well with, the experimental data in high efficient zone of the pump, but there is some deviation from the experimental value at the off-optimum operating conditions and the different turbulence models show different characteristics.