Abstract:

The internal flow within axial flow pump is a complicated turbulent flow. Based on the 3D RANS equations, the standard kε, RNG kε and realizable kε turbulent models are used in 3D numerical simulation of the interior flow within an axial flow pump with the specific speed equal to 1 000 under different operating conditions. The head and efficiency of axial flow pump are calculated and compared with experimental data. Relative errors between the calculated heads derived from different models and the experimental heads on high efficient zones of the pump are less than 4%. Different models have different characteristics deviated from optimal operating conditions.

Key words: internal flow, numerical simulation, turbulent model, axial flow pump