Abstract
The paper presents the comparison of the impeller’s construction on the operating parameters of the sewage pump. Three types of impellers were taken into consideration. The main geometrical parameters were identical, the differences were applied in the meridional cross–section and in the shape of the passages. These three objects of research represent three approaches of the construction of single channel pumps. The analysed impellers were cooperated with the same spiral casing where the flow was identified by means of numerical simulation. The obtained results allow to choose appropriate parameters of the pump in terms of the operating point and shape of the characteristic curves.
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