عنوان مقاله [English]
Centrifugal pumps are used in the various industries as one of the important
components responsible for the movement of the incompressible fluids. In this
paper, the fluid flow of water in a centrifugal pump is simulated with a three-dimensional numerical solution. The operating fluid is considered to be
incompressible and in steady state condition. The numerical solution is
performed using a ANSYSY 16.0 software. The provided results are validated by
the pump manufacturer's characteristic curves. One of the effective factors in
increasing the efficiency of the centrifugal pump impeller is the change in
radial distribution of surface centers of two-dimensional profiles. In this
research, these changes have been done in tangential direction. The change of
the lean angle in two modes of fixed hub and fixed shroud has been performed.
The simulation of the flow field for various lean angles showed that the creation of a negative lean angle has been increased the efficency by 0.51\% for the fixed hub and 1.34\% for the fixed shroud.