Flow Field in the Impeller of a Turbomachinery

This example shows the numerical calculation of the three-dimensional viscous flow field in the impeller of a centrifugal Turbomachinery.

The results of the calculations of the pressure distribution in the impeller at over load condition are presented in the figure. According to this figure at the inlet of the blade passage in the immediate vicinity of the leading edge, a pressure surplus on the suction side compared to the corresponding values on pressure side can be observed. This result indicates a negative blade incidence, which some time occurs at mass flow rates in excess of the design mass flow rate (over load condition).